CVE-2026-101296 (GCVE-0-2026-101296)

Vulnerability from cvelistv5 – Published: 2026-10-20 13:45 – Updated: 2026-10-21 06:31
VLAI
Title
Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms
Summary
A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.
Severity
9.1 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 00:00 UTC
CWE
  • CWE-304 - Missing critical step in authentication
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1087 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.26 (semver)
Affected: 10.1.0-M1 , ≤ 10.1.60 (semver)
Affected: 9.0.0.M1 , ≤ 9.0.122 (semver)
Affected: 8.5.0 , ≤ 8.5.100 (semver)
Affected: 7.0.0 , ≤ 7.0.109 (semver)
guessed Create a notification for this product.
Credits
Sai Sreewathsa Kovalluri, Shon Babu, and Kannan K of Innspark Solutions Private Limited
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-10-20T18:09:50.320Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/10/20/26"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV4_0": {
              "attackComplexity": "LOW",
              "attackRequirements": "PRESENT",
              "attackVector": "NETWORK",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "privilegesRequired": "NONE",
              "subAvailabilityImpact": "NONE",
              "subConfidentialityImpact": "NONE",
              "subIntegrityImpact": "NONE",
              "userInteraction": "NONE",
              "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
              "version": "4.0",
              "vulnAvailabilityImpact": "NONE",
              "vulnConfidentialityImpact": "HIGH",
              "vulnIntegrityImpact": "HIGH"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-101296",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-20T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-21T03:56:29.578Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Apache Tomcat",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "11.0.26",
              "status": "affected",
              "version": "11.0.0-M1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "10.1.60",
              "status": "affected",
              "version": "10.1.0-M1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.0.122",
              "status": "affected",
              "version": "9.0.0.M1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.5.100",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.109",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Sai Sreewathsa Kovalluri, Shon Babu, and Kannan K of Innspark Solutions Private Limited"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eA missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism\u0026nbsp;\u003cspan\u003eallowed attackers to authenticate without providing the correct password.\u003c/span\u003e\u003c/p\u003e\u003cp\u003eThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.\u003c/p\u003e\u003cp\u003e\u003cspan\u003eThe following versions were EOL at the time the CVE was created but are known to be affected:\u003c/span\u003e\u003cspan\u003e\u0026nbsp;\u003c/span\u003efrom 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\u0026nbsp;\u003cspan\u003eOther unsupported versions may also be affected.\u003c/span\u003e\u003c/p\u003e\u003cp\u003eUsers are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.\u003c/p\u003e"
            }
          ],
          "value": "A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism\u00a0allowed attackers to authenticate without providing the correct password.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.\n\n\n\nThe following versions were EOL at the time the CVE was created but are known to be affected:\u00a0from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\u00a0Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "important"
            },
            "type": "Textual description of severity"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-304",
              "description": "CWE-304 Missing critical step in authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T06:31:55.233Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread.html/bl52b9go9ckoov8x4v3dt6rkm573cygd"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms",
      "x_generator": {
        "engine": "Vulnogram 1.0.3"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-101296",
    "datePublished": "2026-10-20T13:45:39.959Z",
    "dateReserved": "2026-09-28T13:07:28.598Z",
    "dateUpdated": "2026-10-21T06:31:55.233Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-101296",
      "date": "2026-10-21",
      "epss": "0.00652",
      "percentile": "0.50536"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Apache Tomcat",
                "vendor": "Apache Software Foundation",
                "versions": [
                  {
                    "lessThanOrEqual": "11.0.26",
                    "status": "affected",
                    "version": "11.0.0-M1",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "10.1.60",
                    "status": "affected",
                    "version": "10.1.0-M1",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "9.0.122",
                    "status": "affected",
                    "version": "9.0.0.M1",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "8.5.100",
                    "status": "affected",
                    "version": "8.5.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.0.109",
                    "status": "affected",
                    "version": "7.0.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@apache.org"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism\u00a0allowed attackers to authenticate without providing the correct password.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.\n\n\n\nThe following versions were EOL at the time the CVE was created but are known to be affected:\u00a0from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\u00a0Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue."
          }
        ],
        "id": "CVE-2026-101296",
        "lastModified": "2026-10-21T04:16:58.097",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-101296",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-20T00:00:00+00:00",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-10-20T14:16:54.767",
        "references": [
          {
            "source": "security@apache.org",
            "url": "https://lists.apache.org/thread.html/bl52b9go9ckoov8x4v3dt6rkm573cygd"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2026/10/20/26"
          }
        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-304"
              }
            ],
            "source": "security@apache.org",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-10-21T17:52:29+00:00",
      "cve": "CVE-2026-101296",
      "id": "CVE-2026-101296",
      "initial_release_date": "2026-10-20T13:45:39.959000+00:00",
      "product_status:fixed": "62",
      "product_status:known_affected": "90",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "tomcat: tomcat: Authentication bypass via non-GSSAPI SASL in JNDI realm",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101296.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2026-10-20T18:09:50.320Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "http://www.openwall.com/lists/oss-security/2026/10/20/26"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV4_0": {
                  "attackComplexity": "LOW",
                  "attackRequirements": "PRESENT",
                  "attackVector": "NETWORK",
                  "baseScore": 9.1,
                  "baseSeverity": "CRITICAL",
                  "privilegesRequired": "NONE",
                  "subAvailabilityImpact": "NONE",
                  "subConfidentialityImpact": "NONE",
                  "subIntegrityImpact": "NONE",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
                  "version": "4.0",
                  "vulnAvailabilityImpact": "NONE",
                  "vulnConfidentialityImpact": "HIGH",
                  "vulnIntegrityImpact": "HIGH"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-101296",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-20T19:23:51.094251Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-20T19:24:35.353Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Apache Tomcat",
              "vendor": "Apache Software Foundation",
              "versions": [
                {
                  "lessThanOrEqual": "11.0.26",
                  "status": "affected",
                  "version": "11.0.0-M1",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "10.1.60",
                  "status": "affected",
                  "version": "10.1.0-M1",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "9.0.122",
                  "status": "affected",
                  "version": "9.0.0.M1",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "8.5.100",
                  "status": "affected",
                  "version": "8.5.0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "7.0.109",
                  "status": "affected",
                  "version": "7.0.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "ai Sreewathsa Kovalluri, Shon Babu, and Kannan K of Innspark Solutions Private Limited"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eA missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism\u0026nbsp;\u003cspan\u003eallowed attackers to authenticate without providing the correct password.\u003c/span\u003e\u003c/p\u003e\u003cp\u003eThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.\u003c/p\u003e\u003cp\u003e\u003cspan\u003eThe following versions were EOL at the time the CVE was created but are known to be affected:\u003c/span\u003e\u003cspan\u003e\u0026nbsp;\u003c/span\u003efrom 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\u0026nbsp;\u003cspan\u003eOther unsupported versions may also be affected.\u003c/span\u003e\u003c/p\u003e\u003cp\u003eUsers are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.\u003c/p\u003e"
                }
              ],
              "value": "A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism\u00a0allowed attackers to authenticate without providing the correct password.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.\n\n\n\nThe following versions were EOL at the time the CVE was created but are known to be affected:\u00a0from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\u00a0Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "text": "important"
                },
                "type": "Textual description of severity"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-304",
                  "description": "CWE-304 Missing critical step in authentication",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-20T13:45:39.959Z",
            "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
            "shortName": "apache"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.apache.org/thread.html/bl52b9go9ckoov8x4v3dt6rkm573cygd"
            }
          ],
          "source": {
            "discovery": "EXTERNAL"
          },
          "title": "Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms",
          "x_generator": {
            "engine": "Vulnogram 1.0.3"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "assignerShortName": "apache",
        "cveId": "CVE-2026-101296",
        "datePublished": "2026-10-20T13:45:39.959Z",
        "dateReserved": "2026-09-28T13:07:28.598Z",
        "dateUpdated": "2026-10-20T19:24:43.768Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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

JSON

Loading timeline…




    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.