CVE-2026-42070

MEDIUM

MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API

Title source: cna
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v4 5.3
EPSS 0.0026
EPSS Percentile 16.9%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-863
Status published
Products (2)
mantisbt/mantisbt 0 - 2.28.2Packagist
mantisbt/mantisbt < 2.28.2
Published May 28, 2026
Tracked Since May 29, 2026