CVE-2026-73581 Apache Tomcat - OpenSSL and OpenSSL-FFM TLS
implementations ignore CRLs when certificate uses a keystore
Severity: Moderate
Vendor: The Apache Software Foundation
Versions Affected:
Apache Tomcat 11.0.0-M1 to 11.0.25
Apache Tomcat 10.1.0-M1 to 10.1.59
Apache Tomcat 9.0.0.M1 to 9.0.121
Description:
Both the OpenSSL and OpenSSL-FFM TLS implementations ignored CRLs when
certificate used a keystore.
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:
- arpitjain099 (https://github.com/arpitjain099)
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
