Information Disclosure in Confluence Data Center

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    • Type: Public Security Vulnerability
    • Resolution: Fixed
    • Priority: High
    • 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
    • 7.5
    • High
    • CVE-2026-34487
    • Atlassian (Internal)
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    • Information Disclosure
    • Confluence Data Center

      This High severity Information Disclosure 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 Information Disclosure vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N allows an unauthenticated attacker to view sensitive information via an Information Disclosure vulnerability which has high impact to confidentiality, no 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: Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering component of Apache Tomcat exposed the Kubernetes bearer token.

      This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.13 through 9.0.116.

      Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

              Assignee:
              Unassigned
              Reporter:
              Security Metrics Bot
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                Created:
                Updated:
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