In short
- CVE-2026-34744 is a MEDIUM (CVSS 5.3) vulnerability affecting mantisbt/mantisbt.
- Chance of exploitation in the next 30 days (EPSS): 0.36%, higher than 30.1% of all vulnerabilities.
- Fix: update to 2.28.2 or later.
Description
MantisBT permits a user to list and download their own attachments from an Issue created by another user, even after that Issue becomes private and direct access to it is denied.
Impact
The loss of confidentiality caused by this vulnerability is minimal, considering that only the attachments that were previously uploaded by the user themselves remains accessible.
Patches
- de7bdeec36de066235e38a77bf056917d951c84d
Workarounds
None.
Credits
Thanks to Vishal Shukla for discovering and responsibly reporting the issue.
NVD 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.
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