medium5.3
CVE-2026-42070
MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API
Impact
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Prior to 2.28.2, the mc_issue_update() function in MantisBT allows users having update_bug_threshold access (UPDATER, with default settings) to edit, change view state, and modify time tracking on bugnotes belonging to other users — bypassing the default DEVELOPER (level 55) threshold required by the dedicated mc_issue_note_update() function. This vulnerability is fixed in 2.28.2.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | mantisbt/mantisbt | <= 2.28.1 | 2.28.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-pq86-j2c2-47f6
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-pq86-j2c2-47f6
- https://github.com/mantisbt/mantisbt/commit/6e58fae4f22efdc3987f903c8ba2611de17a9435
- https://mantisbt.org/bugs/view.php?id=37089
- https://mantisbt.org/bugs/view.php?id=37093
- https://nvd.nist.gov/vuln/detail/CVE-2026-42070