File Inclusion node-tar Dependency in Confluence Data Center

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    • Type: Public Security Vulnerability
    • Resolution: Fixed
    • Priority: High
    • 9.2.19, 10.2.10
    • Affects Version/s: 8.9.0, 8.9.1, 8.9.2, 8.9.3, 8.9.4, 9.1.0, 9.0.1, 8.9.5, 9.0.3, 8.9.6, 8.9.7, 9.1.1, 8.9.8, 9.2.5, 9.2.6, 9.5.1, 9.5.2, 9.5.3, 9.2.7, 9.2.8, 9.5.4, 9.2.9, 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
    • Component/s: None
    • 8.2
    • High
    • CVE-2026-31802
    • Atlassian (Internal)
    • CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
    • File Inclusion
    • Confluence Data Center

      This High severity File Inclusion vulnerability was introduced in versions 8.9.0, 9.0.1, 9.0.3, 9.1.0, 9.2.5, 9.5.1, 10.1.2 and 10.2.0 of Confluence Data Center.

      This File Inclusion vulnerability, with a CVSS Score of 8.2 and a CVSS Vector of CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N allows an unauthenticated attacker to get the application to display the contents of a local file, or execute a different files already stored locally on the server.

      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 9.2.19
      • Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.10

      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: node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.

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              Unassigned
              Reporter:
              Security Metrics Bot
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