CVE-2026-34744

MEDIUM

MantisBT authorization bypass allows continued access to self-uploaded attachments on private issues

Title source: cna
STIX 2.1

Description

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior permit a user to list and download their own attachments from an Issue created by another user even after it becomes private, bypassing read access revocation. The loss of confidentiality caused by this vulnerability is minimal, considering that only attachments previously uploaded by the user themselves remain accessible. This issue has been fixed in version 2.82.2.

References (3)

Core 3

Scores

CVSS v4 5.3
EPSS 0.0036
EPSS Percentile 27.9%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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-200 CWE-281
Status published
Products (2)
mantisbt/mantisbt 0 - 2.28.2Packagist
mantisbt/mantisbt < 2.28.2
Published May 19, 2026
Tracked Since May 20, 2026