En bref
- CVE-2026-42070 est une vulnérabilité MOYENNE (CVSS 5.3) touchant mantisbt/mantisbt.
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.26%, plus élevée que 17.6% des vulnérabilités.
- Correctif : mettre à jour vers 2.28.2 ou plus récent.
Description
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.
Impact
- UPDATER can edit notes by DEVELOPER/MANAGER/ADMIN — bypassing the DEVELOPER threshold
- UPDATER can change private notes to public — exposing confidential internal discussion
- UPDATER can change public notes to private — hiding information from reporters/viewers
Patches
- 6e58fae4f22efdc3987f903c8ba2611de17a9435
Workarounds
None
Credits
Thanks to the following security researchers for independently discovering and responsibly reporting the issue.
- Vishal Shukla
- Tristan Madani (@TristanInSec) from Talence Security
This advisory's contents was largely copied from Tristan's well-written report.
NVD description
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.
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