CVE-2026-65905

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.24 Apache Tomcat versions 10.1.0-M1 through 10.1.57 Apache Tomcat versions 9.0.0.M1 through 9.0.120 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.30 through 7.0.109

Description An authentication bypass exists in the DIGEST authenticator. If a client makes a DIGEST authenticated request with a nonceCount on the upper boundary of the replay window before windowSize requests are made, that request can be replayed once while the associated nonceCount remains within the replay window.

Recommendations Upgrade versions 11.0.0-M1 through 11.0.24 to 11.0.25. Upgrade versions 10.1.0-M1 through 10.1.57 to 10.1.58. Upgrade versions 9.0.0.M1 through 9.0.120 to 9.0.121. At the moment, there is no information about a newer version that contains a fix for this vulnerability for versions 8.5.0 through 8.5.100 and 7.0.30 through 7.0.109.