CVE-2026-34500 Apache Tomcat - OCSP checks sometimes soft-fail with FFM
even when soft-fail is disabled
Severity: Moderate
Vendor: The Apache Software Foundation
Versions Affected:
Apache Tomcat 11.0.0-M14 to 11.0.20
Apache Tomcat 10.1.22 to 10.1.53
Apache Tomcat 9.0.92 to 9.0.116
Description:
CLIENT_CERT authentication did not fail as expected for some scenarios
when soft fail was disabled and FFM was used
Mitigation:
Users of the affected versions should apply one of the following
mitigations:
- Upgrade to Apache Tomcat 11.0.21 or later
- Upgrade to Apache Tomcat 10.1.54 or later
- Upgrade to Apache Tomcat 9.0.117 or later
Credit:
This issue was identified by Haruki Oyama (Waseda University)
History:
2026-04-09 Original advisory
References:
[1] https://tomcat.apache.org/security-11.html
[2] https://tomcat.apache.org/security-10.html
[3] https://tomcat.apache.org/security-9.html
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
