DoS (Denial of Service) org.apache.tomcat:tomcat-catalina Dependency in Confluence Data Center

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    • Type: Public Security Vulnerability
    • Resolution: Fixed
    • Priority: High
    • 11.0.0, 9.2.26, 10.2.19
    • Affects Version/s: 7.2.0, 7.3.1, 7.4.0, 7.5.0, 7.6.0, 7.7.2, 7.8.0, 7.9.0, 7.11.0, 7.12.0, 7.13.0, 7.14.0, 7.15.0, 7.16.0, 7.17.0, 7.18.0, 7.19.0, 7.20.0, 8.0.0, 8.1.0, 8.2.0, 8.3.0, 8.4.0, 8.5.0, 8.6.0, 8.8.0, 8.7.1, 8.9.0, 8.9.1, 8.9.2, 8.9.3, 8.9.4, 9.1.0, 8.9.7, 9.1.1, 8.9.8, 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, 10.2.11, 9.2.20, 9.2.21, 10.2.13, 10.2.14, 9.2.22, 10.2.15, 9.2.23, 9.2.24, 10.2.17, 9.2.25, 10.2.18
    • Component/s: None
    • 7.5
    • High
    • CVE-2026-65927
    • Atlassian (Internal)
    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    • DoS (Denial of Service)
    • Confluence Data Center

      This High severity DoS (Denial of Service) vulnerability was introduced in versions 7.2.0, 7.3.1, 7.4.0, 7.5.0, 7.6.0, 7.7.2, 7.8.0, 7.9.0, 7.11.0, 7.12.0, 7.13.0, 7.14.0, 7.15.0, 7.16.0, 7.17.0, 7.18.0, 7.19.0, 7.20.0, 8.0.0, 8.1.0, 8.2.0, 8.3.0, 8.4.0, 8.5.0, 8.6.0, 8.7.1, 8.8.0, 8.9.0, 9.0.1, 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 DoS (Denial of Service) 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:N/I:N/A:H allows an unauthenticated attacker to expose assets in your environment susceptible to exploitation, which has no impact to confidentiality, no impact to integrity, high 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 11.0: Upgrade to a release greater than or equal to 11.0.0
      • Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.19
      • Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.26

      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:

      Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule.

      This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 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. 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.

              Assignee:
              Unassigned
              Reporter:
              David Detweiler
              Votes:
              0 Vote for this issue
              Watchers:
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                Created:
                Updated:
                Resolved: