Search

Find a vulnerability

Search criteria

    4 vulnerabilities found for Red Hat OpenShift Container Platform 4.22 by Red Hat

    CVE-2026-46579 (GCVE-0-2026-46579)

    Vulnerability from nvd – Published: 2026-05-29 09:50 – Updated: 2026-06-30 12:10
    VLAI
    Title
    Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend
    Summary
    A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    Red Hat Red Hat OpenShift Container Platform 4.20 Unaffected: 1781639027 , < * (rpm)
        cpe:/a:redhat:openshift:4.20::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.21 Unaffected: 1781552170 , < * (rpm)
        cpe:/a:redhat:openshift:4.21::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22 Unaffected: 1781643967 , < * (rpm)
        cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.20     cpe:/a:redhat:openshift:4.20::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.21     cpe:/a:redhat:openshift:4.21::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22     cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Date Public
    2026-04-17 20:10
    Credits
    This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-46579",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-29T13:16:55.280769Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-29T13:17:06.236Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.20::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.20",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.21::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.21",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.22::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.22",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4",
                "vendor": "Red Hat"
              }
            ],
            "datePublic": "2026-04-17T20:10:23.000Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "attackComplexity": "HIGH",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "NONE",
                  "baseScore": 7.4,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "version": "3.1"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-287",
                    "description": "Improper Authentication",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-30T12:10:03.641Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-46579"
              },
              {
                "name": "RHBZ#2483181",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483181"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46579.json"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27063"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27044"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27009"
              }
            ],
            "solutions": [
              {
                "lang": "en",
                "value": "RHSA-2026:27063: Red Hat OpenShift Container Platform 4.20"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:27044: Red Hat OpenShift Container Platform 4.21"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:27009: Red Hat OpenShift Container Platform 4.22"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-04-17T20:10:23.000Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-04-17T20:10:23.000Z",
                "value": "Made public."
              }
            ],
            "title": "openshift/router: openshift/router: mTLS client certificate spoofing via unstripped X-SSL-Client headers on HTTP frontend",
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.20::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router-rhel9",
              "product": "Red Hat OpenShift Container Platform 4.20",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781639027",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.21::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router-rhel9",
              "product": "Red Hat OpenShift Container Platform 4.21",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781552170",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.22::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router-rhel9",
              "product": "Red Hat OpenShift Container Platform 4.22",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781643967",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift:4"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router",
              "product": "Red Hat OpenShift Container Platform 4",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat)."
            }
          ],
          "datePublic": "2026-04-17T20:10:23.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.4,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-287",
                  "description": "Improper Authentication",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-23T09:43:12.915Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "name": "RHSA-2026:27009",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27009"
            },
            {
              "name": "RHSA-2026:27044",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27044"
            },
            {
              "name": "RHSA-2026:27063",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27063"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-46579"
            },
            {
              "name": "RHBZ#2483181",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483181"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-04-17T20:10:23.000Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-04-17T20:10:23.000Z",
              "value": "Made public."
            }
          ],
          "title": "Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-287: Improper Authentication"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-46579",
        "datePublished": "2026-05-29T09:50:44.351Z",
        "dateReserved": "2026-05-28T06:07:06.526Z",
        "dateUpdated": "2026-06-30T12:10:03.641Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-42009 (GCVE-0-2026-42009)

    Vulnerability from nvd – Published: 2026-05-18 12:44 – Updated: 2026-07-01 19:09
    VLAI
    Title
    Gnutls: gnutls: denial of service via dtls packet reordering vulnerability
    Summary
    A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-475 - Undefined Behavior for Input to API
    Assigner
    References
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:3.8.10-4.el10_2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:3.8.9-9.el10_0.19 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:3.3.29-9.el7_9.1 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:3.6.16-8.el8_10.6 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/o:redhat:enterprise_linux:8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:3.6.14-10.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:4.13-3.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:3.6.14-10.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:4.13-3.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:3.6.16-5.el8_6.5 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:4.13-3.el8_6.2 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:3.6.16-5.el8_6.5 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:4.13-3.el8_6.2 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:3.6.16-7.el8_8.4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:4.13-4.el8_8.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:3.6.16-7.el8_8.4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:4.13-4.el8_8.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:3.8.10-4.el9_8 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/o:redhat:enterprise_linux:9::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:3.8.3-4.el9_4.6 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
        cpe:/o:redhat:rhel_e4s:9.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:3.8.3-6.el9_6.4 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/o:redhat:rhel_eus:9.6::baseos
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22 Unaffected: 4.22.9.8.202606230855-0 , < * (rpm)
        cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Red Hat Red Hat Discovery 2 Unaffected: 1782159791 , < * (rpm)
        cpe:/a:redhat:discovery:2::el9
    Create a notification for this product.
    Red Hat Red Hat Discovery 2 Unaffected: 1782166952 , < * (rpm)
        cpe:/a:redhat:discovery:2::el9
    Create a notification for this product.
    Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
        cpe:/a:redhat:hummingbird:1
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525684 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525671 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525693 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525739 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22     cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)     cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS (v. 8)     cpe:/o:redhat:enterprise_linux:8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS AUS (v.8.4)     cpe:/o:redhat:rhel_aus:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)     cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS AUS (v.8.6)     cpe:/o:redhat:rhel_aus:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)     cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS E4S (v.8.8)     cpe:/o:redhat:rhel_e4s:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS TUS (v.8.8)     cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS E4S (v.9.4)     cpe:/o:redhat:rhel_e4s:9.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS (v.9.6)     cpe:/o:redhat:rhel_eus:9.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS (v. 9)     cpe:/o:redhat:enterprise_linux:9::baseos
    Create a notification for this product.
    Red Hat Red Hat Discovery 2     cpe:/a:redhat:discovery:2::el9
    Create a notification for this product.
    Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5     cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Date Public
    2026-04-29 00:00
    Credits
    Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-42009",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-18T19:05:03.965288Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-18T19:05:35.556Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.22::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.22",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_tus:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream TUS (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:9.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.9.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus:9.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:9::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:8::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS (v. 8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_aus:8.4::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS AUS (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_aus:8.6::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS AUS (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_e4s:8.8::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS E4S (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_tus:8.8::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS TUS (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_e4s:9.4::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS E4S (v.9.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_eus:9.6::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:9::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:discovery:2::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Discovery 2",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:hummingbird:1"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Hardened Images",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhui:5::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Update Infrastructure 5",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:7"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux 7",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:6"
                ],
                "defaultStatus": "unaffected",
                "product": "Red Hat Enterprise Linux 6",
                "vendor": "Red Hat"
              }
            ],
            "datePublic": "2026-04-29T00:00:00.000Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-475",
                    "description": "Undefined Behavior for Input to API",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-01T12:05:09.804Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-42009"
              },
              {
                "name": "RHBZ#2467279",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467279"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42009.json"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:29794"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26409"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:20613"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:20611"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:33125"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:30849"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:30850"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:32962"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:30004"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:20612"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:29197"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:13274"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26319"
              }
            ],
            "solutions": [
              {
                "lang": "en",
                "value": "RHSA-2026:29794: Red Hat OpenShift Container Platform 4.22"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26409: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:20613: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:20611: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux BaseOS (v. 8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:33125: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4), Red Hat Enterprise Linux BaseOS AUS (v.8.4), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:30849: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6), Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:30850: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8), Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:32962: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:30004: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:20612: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:29197: Red Hat Discovery 2"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:13274: Red Hat Hardened Images"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26319: Red Hat Update Infrastructure 5"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-05-06T16:32:32.382Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-04-29T00:00:00.000Z",
                "value": "Made public."
              }
            ],
            "title": "gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability",
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:10.2"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 10",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.10-4.el10_2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux_eus:10.0"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.9-9.el10_0.19",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:rhel_els:7"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.3.29-9.el7_9.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:8::appstream",
                "cpe:/o:redhat:enterprise_linux:8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-8.el8_10.6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:8::appstream",
                "cpe:/o:redhat:enterprise_linux:8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-8.el8_10.6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.14-10.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.14-10.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-5.el8_6.5",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_6.2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-5.el8_6.5",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_6.2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-7.el8_8.4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-4.el8_8.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-7.el8_8.4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-4.el8_8.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:9::appstream",
                "cpe:/o:redhat:enterprise_linux:9::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.10-4.el9_8",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:9::appstream",
                "cpe:/o:redhat:enterprise_linux:9::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.10-4.el9_8",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:9.4::appstream",
                "cpe:/o:redhat:rhel_e4s:9.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.3-4.el9_4.6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_eus:9.6::appstream",
                "cpe:/o:redhat:rhel_eus:9.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9.6 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.3-6.el9_6.4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.22::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhcos",
              "product": "Red Hat OpenShift Container Platform 4.22",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "4.22.9.8.202606230855-0",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:discovery:2::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "discovery/discovery-server-rhel9",
              "product": "Red Hat Discovery 2",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1782159791",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:discovery:2::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "discovery/discovery-ui-rhel9",
              "product": "Red Hat Discovery 2",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1782166952",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:hummingbird:1"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls-main",
              "product": "Red Hat Hardened Images",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "3.8.13-1.hum1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/cds-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525684",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/haproxy-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525671",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/installer-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525693",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/rhua-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525739",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:6"
              ],
              "defaultStatus": "unaffected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 6",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue."
            }
          ],
          "datePublic": "2026-04-29T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-475",
                  "description": "Undefined Behavior for Input to API",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-01T19:09:56.338Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "name": "RHSA-2026:13274",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:13274"
            },
            {
              "name": "RHSA-2026:20611",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20611"
            },
            {
              "name": "RHSA-2026:20612",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20612"
            },
            {
              "name": "RHSA-2026:20613",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20613"
            },
            {
              "name": "RHSA-2026:26319",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26319"
            },
            {
              "name": "RHSA-2026:26409",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26409"
            },
            {
              "name": "RHSA-2026:29197",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:29197"
            },
            {
              "name": "RHSA-2026:29794",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:29794"
            },
            {
              "name": "RHSA-2026:30004",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:30004"
            },
            {
              "name": "RHSA-2026:30849",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:30849"
            },
            {
              "name": "RHSA-2026:30850",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:30850"
            },
            {
              "name": "RHSA-2026:32962",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:32962"
            },
            {
              "name": "RHSA-2026:33125",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:33125"
            },
            {
              "name": "RHSA-2026:34372",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:34372"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-42009"
            },
            {
              "name": "RHBZ#2467279",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467279"
            },
            {
              "url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-2"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-05-06T16:32:32.382Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-04-29T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Gnutls: gnutls: denial of service via dtls packet reordering vulnerability",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-475: Undefined Behavior for Input to API"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-42009",
        "datePublished": "2026-05-18T12:44:45.229Z",
        "dateReserved": "2026-04-23T11:23:46.516Z",
        "dateUpdated": "2026-07-01T19:09:56.338Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-46579 (GCVE-0-2026-46579)

    Vulnerability from cvelistv5 – Published: 2026-05-29 09:50 – Updated: 2026-06-30 12:10
    VLAI
    Title
    Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend
    Summary
    A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    Red Hat Red Hat OpenShift Container Platform 4.20 Unaffected: 1781639027 , < * (rpm)
        cpe:/a:redhat:openshift:4.20::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.21 Unaffected: 1781552170 , < * (rpm)
        cpe:/a:redhat:openshift:4.21::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22 Unaffected: 1781643967 , < * (rpm)
        cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.20     cpe:/a:redhat:openshift:4.20::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.21     cpe:/a:redhat:openshift:4.21::el9
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22     cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Date Public
    2026-04-17 20:10
    Credits
    This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat).
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-46579",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-29T13:16:55.280769Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-29T13:17:06.236Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.20::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.20",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.21::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.21",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.22::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.22",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4",
                "vendor": "Red Hat"
              }
            ],
            "datePublic": "2026-04-17T20:10:23.000Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "attackComplexity": "HIGH",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "NONE",
                  "baseScore": 7.4,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "version": "3.1"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-287",
                    "description": "Improper Authentication",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-30T12:10:03.641Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-46579"
              },
              {
                "name": "RHBZ#2483181",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483181"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46579.json"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27063"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27044"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:27009"
              }
            ],
            "solutions": [
              {
                "lang": "en",
                "value": "RHSA-2026:27063: Red Hat OpenShift Container Platform 4.20"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:27044: Red Hat OpenShift Container Platform 4.21"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:27009: Red Hat OpenShift Container Platform 4.22"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-04-17T20:10:23.000Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-04-17T20:10:23.000Z",
                "value": "Made public."
              }
            ],
            "title": "openshift/router: openshift/router: mTLS client certificate spoofing via unstripped X-SSL-Client headers on HTTP frontend",
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.20::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router-rhel9",
              "product": "Red Hat OpenShift Container Platform 4.20",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781639027",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.21::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router-rhel9",
              "product": "Red Hat OpenShift Container Platform 4.21",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781552170",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.22::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router-rhel9",
              "product": "Red Hat OpenShift Container Platform 4.22",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781643967",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift:4"
              ],
              "defaultStatus": "affected",
              "packageName": "openshift4/ose-haproxy-router",
              "product": "Red Hat OpenShift Container Platform 4",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "This issue was discovered by Ricardo Pchevuzinske Katz (Red Hat)."
            }
          ],
          "datePublic": "2026-04-17T20:10:23.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted `X-SSL-Client-*` headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.4,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-287",
                  "description": "Improper Authentication",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-23T09:43:12.915Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "name": "RHSA-2026:27009",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27009"
            },
            {
              "name": "RHSA-2026:27044",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27044"
            },
            {
              "name": "RHSA-2026:27063",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:27063"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-46579"
            },
            {
              "name": "RHBZ#2483181",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483181"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-04-17T20:10:23.000Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-04-17T20:10:23.000Z",
              "value": "Made public."
            }
          ],
          "title": "Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-287: Improper Authentication"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-46579",
        "datePublished": "2026-05-29T09:50:44.351Z",
        "dateReserved": "2026-05-28T06:07:06.526Z",
        "dateUpdated": "2026-06-30T12:10:03.641Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-42009 (GCVE-0-2026-42009)

    Vulnerability from cvelistv5 – Published: 2026-05-18 12:44 – Updated: 2026-07-01 19:09
    VLAI
    Title
    Gnutls: gnutls: denial of service via dtls packet reordering vulnerability
    Summary
    A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-475 - Undefined Behavior for Input to API
    Assigner
    References
    Impacted products
    Vendor Product Version
    Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:3.8.10-4.el10_2 , < * (rpm)
        cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:3.8.9-9.el10_0.19 , < * (rpm)
        cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:3.3.29-9.el7_9.1 , < * (rpm)
        cpe:/o:redhat:rhel_els:7
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:3.6.16-8.el8_10.6 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:8::appstream
        cpe:/o:redhat:enterprise_linux:8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:3.6.14-10.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:4.13-3.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:3.6.14-10.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:4.13-3.el8_4.1 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.4::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
        cpe:/o:redhat:rhel_aus:8.4::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:3.6.16-5.el8_6.5 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:4.13-3.el8_6.2 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:3.6.16-5.el8_6.5 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:4.13-3.el8_6.2 , < * (rpm)
        cpe:/a:redhat:rhel_aus:8.6::appstream
        cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
        cpe:/o:redhat:rhel_aus:8.6::baseos
        cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:3.6.16-7.el8_8.4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:4.13-4.el8_8.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:3.6.16-7.el8_8.4 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:4.13-4.el8_8.1 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:8.8::appstream
        cpe:/a:redhat:rhel_tus:8.8::appstream
        cpe:/o:redhat:rhel_e4s:8.8::baseos
        cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:3.8.10-4.el9_8 , < * (rpm)
        cpe:/a:redhat:enterprise_linux:9::appstream
        cpe:/o:redhat:enterprise_linux:9::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:3.8.3-4.el9_4.6 , < * (rpm)
        cpe:/a:redhat:rhel_e4s:9.4::appstream
        cpe:/o:redhat:rhel_e4s:9.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:3.8.3-6.el9_6.4 , < * (rpm)
        cpe:/a:redhat:rhel_eus:9.6::appstream
        cpe:/o:redhat:rhel_eus:9.6::baseos
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22 Unaffected: 4.22.9.8.202606230855-0 , < * (rpm)
        cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Red Hat Red Hat Discovery 2 Unaffected: 1782159791 , < * (rpm)
        cpe:/a:redhat:discovery:2::el9
    Create a notification for this product.
    Red Hat Red Hat Discovery 2 Unaffected: 1782166952 , < * (rpm)
        cpe:/a:redhat:discovery:2::el9
    Create a notification for this product.
    Red Hat Red Hat Hardened Images Unaffected: 3.8.13-1.hum1 , < * (rpm)
        cpe:/a:redhat:hummingbird:1
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525684 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525671 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525693 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5 Unaffected: 1781525739 , < * (rpm)
        cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
    Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4.22     cpe:/a:redhat:openshift:4.22::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)     cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS (v. 8)     cpe:/o:redhat:enterprise_linux:8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS AUS (v.8.4)     cpe:/o:redhat:rhel_aus:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)     cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS AUS (v.8.6)     cpe:/o:redhat:rhel_aus:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)     cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS E4S (v.8.8)     cpe:/o:redhat:rhel_e4s:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS TUS (v.8.8)     cpe:/o:redhat:rhel_tus:8.8::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS E4S (v.9.4)     cpe:/o:redhat:rhel_e4s:9.4::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS EUS (v.9.6)     cpe:/o:redhat:rhel_eus:9.6::baseos
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux BaseOS (v. 9)     cpe:/o:redhat:enterprise_linux:9::baseos
    Create a notification for this product.
    Red Hat Red Hat Discovery 2     cpe:/a:redhat:discovery:2::el9
    Create a notification for this product.
    Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
    Create a notification for this product.
    Red Hat Red Hat Update Infrastructure 5     cpe:/a:redhat:rhui:5::el9
    Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
    Create a notification for this product.
    Date Public
    2026-04-29 00:00
    Credits
    Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-42009",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-18T19:05:03.965288Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-18T19:05:35.556Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          },
          {
            "affected": [
              {
                "cpes": [
                  "cpe:/a:redhat:openshift:4.22::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat OpenShift Container Platform 4.22",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_aus:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream AUS (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_tus:8.8::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream TUS (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_e4s:9.4::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream E4S (v.9.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhel_eus:9.6::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:enterprise_linux:9::appstream"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux AppStream (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux_eus:10.0"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS (v. 10.0)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10.2"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS (v. 10)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:8::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS (v. 8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_aus:8.4::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS AUS (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_aus:8.6::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS AUS (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_e4s:8.8::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS E4S (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_tus:8.8::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS TUS (v.8.8)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_e4s:9.4::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS E4S (v.9.4)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:rhel_eus:9.6::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS EUS (v.9.6)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:9::baseos"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux BaseOS (v. 9)",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:discovery:2::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Discovery 2",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:hummingbird:1"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Hardened Images",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/a:redhat:rhui:5::el9"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Update Infrastructure 5",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:7"
                ],
                "defaultStatus": "affected",
                "product": "Red Hat Enterprise Linux 7",
                "vendor": "Red Hat"
              },
              {
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:6"
                ],
                "defaultStatus": "unaffected",
                "product": "Red Hat Enterprise Linux 6",
                "vendor": "Red Hat"
              }
            ],
            "datePublic": "2026-04-29T00:00:00.000Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-475",
                    "description": "Undefined Behavior for Input to API",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-01T12:05:09.804Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-42009"
              },
              {
                "name": "RHBZ#2467279",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467279"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42009.json"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:29794"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26409"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:20613"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:20611"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:33125"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:30849"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:30850"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:32962"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:30004"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:20612"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:29197"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:13274"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:26319"
              }
            ],
            "solutions": [
              {
                "lang": "en",
                "value": "RHSA-2026:29794: Red Hat OpenShift Container Platform 4.22"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26409: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:20613: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:20611: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux BaseOS (v. 8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:33125: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4), Red Hat Enterprise Linux BaseOS AUS (v.8.4), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:30849: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6), Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:30850: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8), Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:32962: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:30004: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:20612: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9)"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:29197: Red Hat Discovery 2"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:13274: Red Hat Hardened Images"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:26319: Red Hat Update Infrastructure 5"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-05-06T16:32:32.382Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-04-29T00:00:00.000Z",
                "value": "Made public."
              }
            ],
            "title": "gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability",
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:10.2"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 10",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.10-4.el10_2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux_eus:10.0"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.9-9.el10_0.19",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:rhel_els:7"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.3.29-9.el7_9.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:8::appstream",
                "cpe:/o:redhat:enterprise_linux:8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-8.el8_10.6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:8::appstream",
                "cpe:/o:redhat:enterprise_linux:8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-8.el8_10.6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.14-10.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.14-10.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.4::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
                "cpe:/o:redhat:rhel_aus:8.4::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_4.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-5.el8_6.5",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_6.2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-5.el8_6.5",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_aus:8.6::appstream",
                "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
                "cpe:/o:redhat:rhel_aus:8.6::baseos",
                "cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-3.el8_6.2",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-7.el8_8.4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-4.el8_8.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.6.16-7.el8_8.4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:8.8::appstream",
                "cpe:/a:redhat:rhel_tus:8.8::appstream",
                "cpe:/o:redhat:rhel_e4s:8.8::baseos",
                "cpe:/o:redhat:rhel_tus:8.8::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "libtasn1",
              "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:4.13-4.el8_8.1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:9::appstream",
                "cpe:/o:redhat:enterprise_linux:9::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.10-4.el9_8",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:enterprise_linux:9::appstream",
                "cpe:/o:redhat:enterprise_linux:9::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.10-4.el9_8",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_e4s:9.4::appstream",
                "cpe:/o:redhat:rhel_e4s:9.4::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.3-4.el9_4.6",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:rhel_eus:9.6::appstream",
                "cpe:/o:redhat:rhel_eus:9.6::baseos"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 9.6 Extended Update Support",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "0:3.8.3-6.el9_6.4",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift:4.22::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhcos",
              "product": "Red Hat OpenShift Container Platform 4.22",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "4.22.9.8.202606230855-0",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:discovery:2::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "discovery/discovery-server-rhel9",
              "product": "Red Hat Discovery 2",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1782159791",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:discovery:2::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "discovery/discovery-ui-rhel9",
              "product": "Red Hat Discovery 2",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1782166952",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:hummingbird:1"
              ],
              "defaultStatus": "affected",
              "packageName": "gnutls-main",
              "product": "Red Hat Hardened Images",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "3.8.13-1.hum1",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/cds-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525684",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/haproxy-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525671",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/installer-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525693",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://catalog.redhat.com/software/containers/",
              "cpes": [
                "cpe:/a:redhat:rhui:5::el9"
              ],
              "defaultStatus": "affected",
              "packageName": "rhui5/rhua-rhel9",
              "product": "Red Hat Update Infrastructure 5",
              "vendor": "Red Hat",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "unaffected",
                  "version": "1781525739",
                  "versionType": "rpm"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:6"
              ],
              "defaultStatus": "unaffected",
              "packageName": "gnutls",
              "product": "Red Hat Enterprise Linux 6",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue."
            }
          ],
          "datePublic": "2026-04-29T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-475",
                  "description": "Undefined Behavior for Input to API",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-01T19:09:56.338Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "name": "RHSA-2026:13274",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:13274"
            },
            {
              "name": "RHSA-2026:20611",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20611"
            },
            {
              "name": "RHSA-2026:20612",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20612"
            },
            {
              "name": "RHSA-2026:20613",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:20613"
            },
            {
              "name": "RHSA-2026:26319",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26319"
            },
            {
              "name": "RHSA-2026:26409",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:26409"
            },
            {
              "name": "RHSA-2026:29197",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:29197"
            },
            {
              "name": "RHSA-2026:29794",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:29794"
            },
            {
              "name": "RHSA-2026:30004",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:30004"
            },
            {
              "name": "RHSA-2026:30849",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:30849"
            },
            {
              "name": "RHSA-2026:30850",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:30850"
            },
            {
              "name": "RHSA-2026:32962",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:32962"
            },
            {
              "name": "RHSA-2026:33125",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:33125"
            },
            {
              "name": "RHSA-2026:34372",
              "tags": [
                "vendor-advisory",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2026:34372"
            },
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-42009"
            },
            {
              "name": "RHBZ#2467279",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467279"
            },
            {
              "url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-2"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-05-06T16:32:32.382Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-04-29T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Gnutls: gnutls: denial of service via dtls packet reordering vulnerability",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-475: Undefined Behavior for Input to API"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-42009",
        "datePublished": "2026-05-18T12:44:45.229Z",
        "dateReserved": "2026-04-23T11:23:46.516Z",
        "dateUpdated": "2026-07-01T19:09:56.338Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }