BIT-tomcat-2026-73180

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    BIT-tomcat-2026-73180

    Published: 31 Aug 2026Last Modified: 8 Sept 2026

    Summary: Apache Tomcat: Authenticated WebSocket session survives end of HTTP session

    Details: Insufficient Session Expiration vulnerability in Apache Tomcat meant that if the session ID for an authenticated HTTP session was changed after a WebSocket connection had been established under that authenticated HTTP session, the WebSokcet session would not be closed as required by the Jakarta WebSocket specification when the HTTP session ended. This issue affects Apache Tomcat: from 11.0.0 through 11.0.24, from 10.1.0 through 10.1.57, from 9.0.0 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

    References: http://www.openwall.com/lists/oss-security/2026/08/26/10, https://lists.apache.org/thread/3j15vztszpyqss253mjq5v1kp7s6hooq, https://nvd.nist.gov/vuln/detail/CVE-2026-73180

    Affected packages

    Package

    Name: tomcat

    Purl: pkg:bitnami/tomcat

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 7.0.43
    Fixed -9.0.121

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High