apache/tomcat · Security
Apache Tomcat: CLIENT_CERT authentication does not fail as expected
- GHSA ID
- GHSA-24j9-x2wg-9qv6
- CVE ID
- CVE-2026-34500
- Severity
- medium
- Published
- Updated
- CVSS
- 6.5 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
- CVSS v3
- 6.5 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Description
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.
CWEs
- CWE-287 · Improper Authentication
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-34500 ↗
- https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2 ↗
- http://www.openwall.com/lists/oss-security/2026/04/09/29 ↗
- https://github.com/apache/tomcat/commit/29b56a56ce9e7d044b6162a99af0f38529b3a208 ↗
- https://github.com/apache/tomcat/commit/c13e60e732ea6d07087293a41ad1866c20848271 ↗
- https://github.com/apache/tomcat/commit/ff589ab26e8250a2ca4286d986305318c033ff9f ↗
- https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54 ↗
- https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.21 ↗
- https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.117 ↗
- https://github.com/advisories/GHSA-24j9-x2wg-9qv6 ↗