CVE-2026-73581: Apache Tomcat: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore
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 10.1.58, 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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache Tomcatto a version that resolves this vulnerability.Fixed in 11.0.26 - Upgrade
Upgrade
Apache Tomcatto a version that resolves this vulnerability.Fixed in 10.1.59 - Upgrade
Upgrade
Apache Tomcatto a version that resolves this vulnerability.Fixed in 9.0.122
Event History
Frequently Asked Questions
Which deployments are affected by this issue?
Affected deployments use Tomcat's OpenSSL or OpenSSL-FFM TLS implementation and use a keystore for the certificate. In those configurations, configured certificate revocation lists are ignored.
What does an attacker need to exploit the issue?
The provided information does not specify attacker prerequisites beyond the affected TLS configuration. The relevant exposure is acceptance of a certificate that should have been rejected based on a CRL.
Which releases contain the fix?
Upgrade to Tomcat 11.0.26, 10.1.59, or 9.0.122. Affected ranges include 11.0.0-M1 through 11.0.25, 10.1.0-M1 through 10.1.58, and 9.0.0-M1 through 9.0.121; 8.5.0 through 8.5.100 is also known to be affected but was end of life when the CVE was created.