BASM (Broken Authentication & Session Management) in Confluence Data Center

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    • Type: Public Security Vulnerability
    • Resolution: Fixed
    • Priority: Highest
    • 10.2.11, 9.2.20
    • Affects Version/s: 9.1.0, 9.1.1, 9.2.0, 9.2.1, 9.4.0, 9.3.1, 9.2.2, 9.3.2, 9.2.3, 9.4.1, 9.2.4, 9.2.5, 9.2.6, 9.5.1, 9.5.2, 9.5.3, 9.2.7, 10.1.0, 9.2.8, 10.0.2, 10.0.3, 9.5.4, 9.2.9, 10.1.1, 10.2.0, 9.2.10, 10.1.2, 9.2.11, 9.2.12, 10.2.1, 9.2.13, 10.2.2, 9.2.14, 10.2.3, 9.2.15, 10.2.6, 9.2.17, 10.2.7, 9.2.19, 10.2.10
    • Component/s: None
    • 9.1
    • Critical
    • CVE-2026-29145
    • Atlassian (Internal)
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    • BASM (Broken Authentication & Session Management)
    • Confluence Data Center

      This is a vulnerability in a non-Atlassian Confluence dependency. Atlassian's application of this dependency presents a lower, non-critical assessed risk.

      This Critical severity BASM (Broken Authentication & Session Management) vulnerability was introduced in versions 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center.

      This BASM (Broken Authentication & Session Management) vulnerability, with a CVSS Score of 9.1 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N allows an unauthenticated attacker to perform actions as another user which has high impact to confidentiality, high impact to integrity, no impact to availability, and requires no user interaction.

      Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:

      • Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.20
      • Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.11

      See the release notes (https://confluence.atlassian.com/doc/confluence-release-notes-327.html). You can download the latest version of Confluence Data Center from the download center (https://www.atlassian.com/software/confluence/download-archives).

      The National Vulnerability Database provides the following description for this vulnerability: CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native.

      This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13.

      Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.

              Assignee:
              Unassigned
              Reporter:
              Security Metrics Bot
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                Updated:
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