Vulnerability-Lookup

CVE-2026-71290 (GCVE-0-2026-71290)

Vulnerability from cvelistv5 – Published: 2026-08-11 20:33 – Updated: 2026-09-24 03:55

Title

Apache HttpComponents Client: TLS hostname verification silently disabled on the async transport (default config, MITM)

Summary

Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer. HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain. Please note the classic version of HttpClient is not affected by this vulnerability. Affected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 00:00 UTC

CWE

CWE-295 - Improper Certificate Validation

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1257 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/bhf7g2zwpom2ohvwj…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/08/13/6

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache HttpComponents Client	Affected: 5.4-alpha , ≤ 5.6.3 (semver)	guessed

Credits

n0mi1k

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-71290",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-24T03:55:24.916Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-08-13T16:18:22.325Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/08/13/6"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2/",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.httpcomponents.client5:httpclient5",
          "product": "Apache HttpComponents Client",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "5.6.3",
              "status": "affected",
              "version": "5.4-alpha",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "n0mi1k"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eImproper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.\u0026nbsp;HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.\u0026nbsp;\u003cbr\u003e\u003c/p\u003e\u003cp\u003ePlease note the classic version of HttpClient is not affected by this vulnerability.\u0026nbsp;\u003c/p\u003e\u003cp\u003eAffected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.\u003cbr\u003e\u003c/p\u003e"
            }
          ],
          "value": "Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.\u00a0HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.\u00a0\n\n\nPlease note the classic version of HttpClient is not affected by this vulnerability.\u00a0\n\nAffected users are recommended to upgrade to at least version 5.6.4, which fixes the issue."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "important"
            },
            "type": "Textual description of severity"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295 Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-13T09:30:14.754Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread/bhf7g2zwpom2ohvwjjjlonc93br2s8vq"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Apache HttpComponents Client: TLS hostname verification silently disabled on the async transport (default config, MITM)",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-71290",
    "datePublished": "2026-08-11T20:33:56.947Z",
    "dateReserved": "2026-08-05T12:30:56.682Z",
    "dateUpdated": "2026-09-24T03:55:24.916Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-71290",
      "date": "2026-11-15",
      "epss": "0.00331",
      "percentile": "0.26616"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://repo.maven.apache.org/maven2/",
                "defaultStatus": "unaffected",
                "packageName": "org.apache.httpcomponents.client5:httpclient5",
                "product": "Apache HttpComponents Client",
                "vendor": "Apache Software Foundation",
                "versions": [
                  {
                    "lessThanOrEqual": "5.6.3",
                    "status": "affected",
                    "version": "5.4-alpha",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@apache.org"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:apache:httpclient:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E0A77896-6021-44F0-9EA9-C79EECD7A7E8",
                    "versionEndExcluding": "5.6.4",
                    "versionStartIncluding": "5.4",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.\u00a0HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.\u00a0\n\n\nPlease note the classic version of HttpClient is not affected by this vulnerability.\u00a0\n\nAffected users are recommended to upgrade to at least version 5.6.4, which fixes the issue."
          },
          {
            "lang": "es",
            "value": "Vulnerabilidad de verificaci\u00f3n de nombre de host TLS incorrecta en Apache HttpComponents Client 5.4 o posterior. La configuraci\u00f3n HostnameVerificationPolicy#BUILTIN no tiene efecto cuando se usa con la versi\u00f3n as\u00edncrona de HttpClient. Un atacante que puede interceptar y modificar el tr\u00e1fico entre el cliente y el servidor puede suplantar al servidor presentando un certificado v\u00e1lido para un dominio diferente.\n\nTenga en cuenta que la versi\u00f3n cl\u00e1sica de HttpClient no se ve afectada por esta vulnerabilidad.\n\nSe recomienda a los usuarios afectados actualizar a la versi\u00f3n 5.6.4 como m\u00ednimo, que corrige el problema."
          }
        ],
        "id": "CVE-2026-71290",
        "lastModified": "2026-10-24T15:10:00.190",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.2,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-71290",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T00:00:00+00:00",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-11T21:17:51.157",
        "references": [
          {
            "source": "security@apache.org",
            "tags": [
              "Mailing List",
              "Release Notes"
            ],
            "url": "https://lists.apache.org/thread/bhf7g2zwpom2ohvwjjjlonc93br2s8vq"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2026/08/13/6"
          }
        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-295"
              }
            ],
            "source": "security@apache.org",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-11-12T17:31:54+00:00",
      "cve": "CVE-2026-71290",
      "id": "CVE-2026-71290",
      "initial_release_date": "2026-08-11T20:33:56.947000+00:00",
      "product_status:fixed": "15",
      "product_status:known_affected": "3",
      "product_status:known_not_affected": "2743",
      "product_status:under_investigation": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "org.apache.httpcomponents.client5/httpclient5: Apache HttpComponents Client: Server impersonation via improper TLS hostname verification",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-71290.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2026-08-13T16:18:22.325Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "http://www.openwall.com/lists/oss-security/2026/08/13/6"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "NONE",
                  "baseScore": 9.1,
                  "baseSeverity": "CRITICAL",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-71290",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-12T19:19:57.559731Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-12T19:20:15.021Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://repo.maven.apache.org/maven2/",
              "defaultStatus": "unaffected",
              "packageName": "org.apache.httpcomponents.client5:httpclient5",
              "product": "Apache HttpComponents Client",
              "vendor": "Apache Software Foundation",
              "versions": [
                {
                  "lessThanOrEqual": "5.6.3",
                  "status": "affected",
                  "version": "5.4-alpha",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "n0mi1k"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eImproper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.\u0026nbsp;HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.\u0026nbsp;\u003cbr\u003e\u003c/p\u003e\u003cp\u003ePlease note the classic version of HttpClient is not affected by this vulnerability.\u0026nbsp;\u003c/p\u003e\u003cp\u003eAffected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.\u003cbr\u003e\u003c/p\u003e"
                }
              ],
              "value": "Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.\u00a0HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain.\u00a0\n\n\nPlease note the classic version of HttpClient is not affected by this vulnerability.\u00a0\n\nAffected users are recommended to upgrade to at least version 5.6.4, which fixes the issue."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "text": "important"
                },
                "type": "Textual description of severity"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-295",
                  "description": "CWE-295 Improper Certificate Validation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-13T09:30:14.754Z",
            "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
            "shortName": "apache"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.apache.org/thread/bhf7g2zwpom2ohvwjjjlonc93br2s8vq"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Apache HttpComponents Client: TLS hostname verification silently disabled on the async transport (default config, MITM)",
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "assignerShortName": "apache",
        "cveId": "CVE-2026-71290",
        "datePublished": "2026-08-11T20:33:56.947Z",
        "dateReserved": "2026-08-05T12:30:56.682Z",
        "dateUpdated": "2026-09-24T03:55:24.916Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

RHSA-2026:83612

Vulnerability from csaf_redhat - Published: 2026-10-15 14:45 - Updated: 2026-11-12 17:32

Summary

Red Hat Security Advisory: Red Hat build of Debezium 3.6.3 release

Severity

Important

Scope

31 vulnerabilities in this advisory, including CVE-2026-71290.

CVE-2026-71290

A flaw was found in the asynchronous version of Apache HttpComponents Client. This improper Transport Layer Security (TLS) hostname verification vulnerability allows a remote attacker to intercept and modify network traffic. By presenting a valid certificate for a different domain, an attacker can impersonate the server, leading to a Man-in-the-Middle (MITM) attack and compromising communication.

8.1 (High)


                
                  CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Fixed: 1 product

https://access.redhat.com/errata/RHSA-2026:83612

Open the full advisory

RHSA-2026:90321

Vulnerability from csaf_redhat - Published: 2026-10-26 14:24 - Updated: 2026-11-13 16:45

Summary

Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.31.0 Release.

Severity

Critical

Scope

105 vulnerabilities in this advisory, including CVE-2026-71290.

CVE-2026-71290

8.1 (High)


                
                  CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Fixed: 12 products Known not affected: 49 products

https://access.redhat.com/errata/RHSA-2026:90321

Open the full advisory

UBUNTU-CVE-2026-71290 (CVE-2026-71290)

Vulnerability from osv_ubuntu – Published: 2026-08-11 21:17 – Updated: 2026-10-17 09:49 – Source website

Details

Severity

9.1 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-71290	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-71290	REPORT
	https://lists.apache.org/thread/bhf7g2zwpom2ohvwj…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhttpcore5-java",
            "binary_version": "5.1.3-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "httpcomponents-core5",
        "purl": "pkg:deb/ubuntu/httpcomponents-core5@5.1.3-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.1.2-1",
        "5.1.2-2",
        "5.1.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhttpcore5-java",
            "binary_version": "5.2.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "httpcomponents-core5",
        "purl": "pkg:deb/ubuntu/httpcomponents-core5@5.2.2-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.1-1",
        "5.2.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhttpcore5-java",
            "binary_version": "5.4.3-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "httpcomponents-core5",
        "purl": "pkg:deb/ubuntu/httpcomponents-core5@5.4.3-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4-1",
        "5.4.2-1.1",
        "5.4.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libhttpcore5-java",
            "binary_version": "5.4-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "httpcomponents-core5",
        "purl": "pkg:deb/ubuntu/httpcomponents-core5@5.4-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.2-1",
        "5.2.2-2",
        "5.4-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Improper TLS hostname verification vulnerability in Apache HttpComponents Client 5.4 or newer.\u00a0HostnameVerificationPolicy#BUILTIN setting has no effect when used with the async version of HttpClient. An attacker that can intercept and modify traffic between the client and the server can impersonate the server by presenting a valid certificate for a different domain. Please note the classic version of HttpClient is not affected by this vulnerability. Affected users are recommended to upgrade to at least version 5.6.4, which fixes the issue.",
  "id": "UBUNTU-CVE-2026-71290",
  "modified": "2026-10-17T09:49:44Z",
  "published": "2026-08-11T21:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-71290"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-71290"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread/bhf7g2zwpom2ohvwjjjlonc93br2s8vq"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-71290"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-71290 (GCVE-0-2026-71290)

RHSA-2026:83612

RHSA-2026:90321

UBUNTU-CVE-2026-71290 (CVE-2026-71290)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour