CVE-2026-86248 Apache Tomcat - Fix for CVE-2026-34500 was incomplete.
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 11.0.25
Apache Tomcat 10.1.22 to 10.1.59
Apache Tomcat 9.0.92 to 9.0.121
Description:
CLIENT_CERT authentication does not fail as expected for some scenarios
when OCSP soft fail is disabled.
Mitigation:
Users of the affected versions should apply one of the following
mitigations:
- Remove the examples web application
- Upgrade to Apache Tomcat 11.0.26
- Upgrade to Apache Tomcat 10.1.60
- Upgrade to Apache Tomcat 9.0.122
Credit:
This issue was identified by:
- Mike Read (github.com/Michael-JRead)
History:
2026-09-23 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
