Vulnerability · Published May 19, 2026 · Assigned by GitHub_M
CVE-2026-34744MantisBT authorization bypass allows continued access to self-uploaded attachments on private issues
Medium 5.3
In plain English
A medium-severity information exposure in mantisbt from mantisbt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | mantisbt/mantisbt | 2.28.2 | GHSA-rmp5-5jj7-gmvf |
Affected products (as reported)
Weakness: CWE-200, CWE-281 · 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
References
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-rmp5-5jj7-gmvf x_refsource_CONFIRM
- https://github.com/mantisbt/mantisbt/commit/de7bdeec36de066235e38a77bf056917d951c84d x_refsource_MISC
- https://mantisbt.org/bugs/view.php?id=36977 x_refsource_MISC