CVE-2026-42070: Mantisbt

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

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 products

• Mantisbt Mantisbt: before 2.28.2 (fixed in 2.28.2)

Published 2026-05-28. Last modified 2026-06-17.