CVE-2026-73581: Apache Software Foundation Apache Tomcat

Medium severity, CVSS 6.5. EPSS: 0.1% chance of exploitation in the next 30 days.

Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0-M1 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.59, 9.0.122, which fixes the issue.

Affected products

• Apache Software Foundation Apache Tomcat: from 11.0.0-M1, up to and including 11.0.25; from 10.1.0-M1, up to and including 10.1.59; from 9.0.0.M1, up to and including 9.0.121; from 8.5.0, up to and including 8.5.100

Published 2026-09-23. Last modified 2026-09-30.