CVE-2026-55956

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.22 Apache Tomcat versions 10.1.0-M1 through 10.1.55 Apache Tomcat versions 9.0.0.M1 through 9.0.118 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.0 through 7.0.109

Description An improper authorization issue exists where security constraints defined for the default servlet ignore any configured method or method omission. This allows requests to bypass intended security restrictions when they are applied to the default servlet.

Recommendations Upgrade to version 11.0.23 Upgrade to version 10.1.56 Upgrade to version 9.0.119