AIKIDO-2026-433748
tomcat-catalina-ha is vulnerable to Insufficient Session Expiration
68
Medium Risk
This Affects:
tomcat-catalina-haTL;DR
tomcat-catalina-ha keeps the WebSocket bindings of a clustered HTTP session under the previous session ID when that ID changes. A WebSocket opened under the authenticated session is then not closed once the HTTP session ends. That leaves an authenticated channel open past the HTTP session lifetime. The fix tracks the session ID change so the WebSocket is closed with the HTTP session.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and a WebSocket is opened under an authenticated HTTP session whose session ID is later changed.
Background info
tomcat-catalina-ha is vulnerable to Insufficient Session Expiration in versions 7.0.43 - 9.0.120, 10.1.0 - 10.1.57 and 11.0.0 - 11.0.24.
How to fix this
Upgrade the org.apache.tomcat:tomcat-catalina-ha library to the patch version.
Links
tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.25lists.apache.org/thread/3j15vztszpyqss253mjq5v1kp7s6hooqopenwall.com/lists/oss-security/2026/08/26/10
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