CVE-2026-34500

A flaw was found in Apache Tomcat where OCSP-based certificate validation may incorrectly soft-fail during CLIENT_CERT authentication, even when soft-fail is disabled, under certain FFM-related execution paths. This can result in client certificates being accepted despite failed or unverifiable revocation checks, weakening certificate validation in specific mTLS configurations.

This issue only affects Tomcat builds with FFM support enabled. In Red Hat Enterprise Linux, this support is only available in Tomcat package in Red Hat Enterprise Linux versions 9.8 and later, and 10.2 and later, as the feature requires Java 22 or later.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.