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. 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.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - security@apache.org

Published

2026-04-09

Last modified

2026-10-26

Weaknesses

CWE-287

Affected products

• Tomcat (Apache)
• Apache Tomcat (Apache Software Foundation)

References

• https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2
• http://www.openwall.com/lists/oss-security/2026/04/09/29