GHSA-24J9-X2WG-9QV6

Vulnerability from github – Published: 2026-04-09 21:31 – Updated: 2026-05-20 02:14
VLAI
Summary
Apache Tomcat: CLIENT_CERT authentication does not fail as expected
Details

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116.

Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat-coyote-ffm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.92"
            },
            {
              "fixed": "9.0.117"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat-coyote-ffm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.22"
            },
            {
              "fixed": "10.1.54"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat-coyote-ffm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "11.0.0-M14"
            },
            {
              "fixed": "11.0.21"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34500"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-10T21:38:56Z",
    "nvd_published_at": "2026-04-09T20:16:25Z",
    "severity": "MODERATE"
  },
  "details": "CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.",
  "id": "GHSA-24j9-x2wg-9qv6",
  "modified": "2026-05-20T02:14:27Z",
  "published": "2026-04-09T21:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34500"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/29b56a56ce9e7d044b6162a99af0f38529b3a208"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/c13e60e732ea6d07087293a41ad1866c20848271"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/ff589ab26e8250a2ca4286d986305318c033ff9f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/tomcat"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.21"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.117"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/09/29"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Tomcat: CLIENT_CERT authentication does not fail as expected"
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.


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