CVE-2026-73581

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.

Score

CVSS 3.1 6.5 Medium

Status

Awaiting Analysis - security@apache.org

Published

2026-09-23

Last modified

2026-09-30

Weaknesses

CWE-299

Affected products

• Apache Tomcat (Apache Software Foundation)

References

• https://lists.apache.org/thread/r0dj3h1pbn4wv96fhsfrnz3t6874t6do
• http://www.openwall.com/lists/oss-security/2026/09/23/19