CVE-2026-34754CWE-284

MantisBT allows unauthorized users to upload attachments to restricted issues via REST API

Medium · published May 19, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
24.3
In the wild
Unconfirmed
What it is

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow an authenticated user to upload attachments to private Issues they are not authorized to access. This issue has been fixed in version 2.28.2.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00325 · 24.3th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-05-19T23:05Z
EPSS history
Timeline
  • 19 MAY 23:05Z
    MantisBT allows unauthorized users to upload attachments to restricted issues via REST API
    cvelistv5