CVE-2026-42070CWE-863

MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API

Medium · published May 28, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
38.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00449 · 38.0th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-05-28T20:28Z
EPSS history
Timeline
  • 28 MAY 20:28Z
    MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API
    cvelistv5