GHSA-rmp5-5jj7-gmvf
MantisBT has an authorization bypass that allows reading attachments after losing access to a private issue
Quick fix
GHSA-rmp5-5jj7-gmvf — mantisbt/mantisbt: upgrade to the fixed version with the command below.
composer require mantisbt/mantisbt:^2.28.2Details
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
0Fixed in: 2.28.2composer require mantisbt/mantisbt:^2.28.2References
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-rmp5-5jj7-gmvf[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-34744[ADVISORY]
- https://github.com/mantisbt/mantisbt/commit/de7bdeec36de066235e38a77bf056917d951c84d[WEB]
- https://github.com/mantisbt/mantisbt[PACKAGE]
- https://mantisbt.org/bugs/view.php?id=36977[WEB]