CVE-2026-34579

MantisBT has an authorization bypass via private issue monitoring

Published: May 19, 2026Updated: Jul 24, 2026 Sources: CVE List NVDCWE-200

N/ACVSS

NVD MITRE

Description

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.

No summary for this CVE yet.

Weaknesses

CWE-200 CWE-863

Affected Products

mantisbt

oss-projectaka mantis bt

mantisbtOn-premWeb App

Enterprise Software / itsm-monitoring

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques

Collection

Initial Access

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References

https://github.com/mantisbt/mantisbt/commit/0a93267deba445fb9d15250c16e6fdb1246ffa65

github.com

https://github.com/mantisbt/mantisbt/security/advisories/GHSA-ggw7-9675-6v4v

github.com

https://mantisbt.org/bugs/view.php?id=36975

mantisbt.org

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