medium6.5
CVE-2026-34500
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.apache.tomcat:tomcat-coyote-ffm | >= 9.0.92, < 9.0.117 | 9.0.117 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Tomcat | from 9.0.92 before 9.0.117 from 10.1.22 before 10.1.54 from 11.0.1 before 11.0.21 Version 11.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2
- http://www.openwall.com/lists/oss-security/2026/04/09/29
- https://github.com/advisories/GHSA-24j9-x2wg-9qv6
- https://nvd.nist.gov/vuln/detail/CVE-2026-34500
- 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