CVE-2026-34744CWE-200CWE-281

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

Medium · published May 19, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
37.1
In the wild
Unconfirmed
What it is

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.

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:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00439 · 37.1th percentile
Weaknesses
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor; CWE-281 · Improper Preservation of Permissions
Published
2026-05-19T22:45Z
EPSS history
Timeline
  • 19 MAY 22:45Z
    MantisBT authorization bypass allows continued access to self-uploaded attachments on private issues
    cvelistv5