MEDIUM4.3
GHSA-h4x5-gvx6-3rwc
MantisBT has an Authorization Bypass that Allows Uploading Attachments to Private Issues via REST API
Quick fix
GHSA-h4x5-gvx6-3rwc — mantisbt/mantisbt: upgrade to the fixed version with the command below.
composer require mantisbt/mantisbt:^2.28.2Details
### Impact MantisBT allows an authenticated user to upload attachments to private Issues they are not authorized to access.
### Patches - b262b4d2835b81394d75356dead66e52a6275206
### 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
Packagist/mantisbt/mantisbt
Introduced in:
0Fixed in: 2.28.2Fix
composer require mantisbt/mantisbt:^2.28.2References
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-h4x5-gvx6-3rwc[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-34754[ADVISORY]
- https://github.com/mantisbt/mantisbt/commit/b262b4d2835b81394d75356dead66e52a6275206[WEB]
- https://github.com/mantisbt/mantisbt[PACKAGE]
- https://mantisbt.org/bugs/view.php?id=36976[WEB]