Apache Tomcat: Authenticated WebSocket session survives end of HTTP session (CVE-2026-73180)
Description
Apache Tomcat contains an Insufficient Session Expiration vulnerability (CVE-2026-73180) where authenticated WebSocket sessions can persist after the associated HTTP session ends if the session ID changes. This affects multiple versions across Tomcat 7, 8.5, 9, 10.1, and 11 branches. The issue is fixed in versions 11.0.25, 10.1.58, and 9.0.121. Users are advised to upgrade to these or later versions to resolve the vulnerability.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-73180 is an Insufficient Session Expiration vulnerability in Apache Tomcat. When an authenticated HTTP session's ID changes after a WebSocket connection is established, the WebSocket session does not close as required by the Jakarta WebSocket specification upon HTTP session termination. This flaw affects Apache Tomcat versions from 11.0.0 through 11.0.24, 10.1.0 through 10.1.57, 9.0.0 through 9.0.120, and also older EOL versions 8.5.0 through 8.5.100 and 7.0.43 through 7.0.109. The vulnerability is addressed by upgrading to versions 11.0.25, 10.1.58, or 9.0.121.
Potential Impact
The vulnerability allows authenticated WebSocket sessions to remain active beyond the lifetime of their associated HTTP sessions, potentially violating session management expectations and the Jakarta WebSocket specification. This could lead to unauthorized continuation of WebSocket communication after HTTP session termination. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available. Users should upgrade affected Apache Tomcat instances to versions 11.0.25, 10.1.58, or 9.0.121 or later to remediate this issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-wrvx-pxxf-g8fg
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-73180"]
- State
- PUBLISHED
Threat ID: 6a8efff1acd9273b4908c9f4
Added to database: 08/26/2026, 15:02:09 UTC
Last enriched: 09/08/2026, 15:01:24 UTC
Last updated: 10/10/2026, 18:48:22 UTC
Views: 49
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