CVE-2026-43512

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.21 Apache Tomcat versions 10.1.0-M1 through 10.1.54 Apache Tomcat versions 9.0.0.M1 through 9.0.117 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions prior to 7.0.0

Description An authentication bypass issue exists in the digest authentication mechanism. There have been reports of increased actor activities targeting this flaw.

Recommendations Upgrade versions 11.0.0-M1 through 11.0.21 to 11.0.22. Upgrade versions 10.1.0-M1 through 10.1.54 to 10.1.55. Upgrade versions 9.0.0.M1 through 9.0.117 to 9.0.118.