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CVE-2026-34579GHSA-GGW7-9675-6V4V

MantisBT has an authorization bypass via private issue monitoring

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.28.2
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior are vulnerable to Authorization Bypass through the private issue monitoring feature . Using a crafted POST request to bug_monitor_add.php, a user with project-level access can add themselves as a monitor for a private issue they do not have access to. Despite displaying an Access Denied error, the application accepts the request and creates a monitor relationship for the private issue. Direct access to the private issue remains blocked, but the user will receive email notifications for updates, leading to disclosure of the private issue's metadata and content. This issue has been fixed in version 2.28.2.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • mantisbt mantisbt

    fixed in 2.28.2

  • mantisbt/mantisbtPackagist

    From 2.26.1 · fixed in 2.28.2

References 3

GitHub · mantisbt/mantisbt

mantisbt.org