MantisBT has an Authorization Bypass that Allows Uploading Attachments to Private Issues via REST API

MITTEL 4.3CVE-2026-34754 · GHSA-h4x5-gvx6-3rwc · Published 20/05/2026 · updated 24/07/2026

Kurz gesagt

CVE-2026-34754 ist eine Schwachstelle (MITTEL (CVSS 4.3)) in mantisbt/mantisbt.
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.25%, höher als bei 16.1% aller Schwachstellen.
Abhilfe: auf 2.28.2 oder neuer aktualisieren.

Package	Affected versions	Patched versions
mantisbt/mantisbt Packagist	`< 2.28.2`	`2.28.2`

Description

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.

NVD description

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.

References

mantisbt/mantisbt security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2026-34754 · ADVISORY
mantisbt/mantisbt commit b262b4d · WEB
mantisbt/mantisbt · PACKAGE
mantisbt.org/bugs/view.php · WEB

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Package

Affected versions

Patched versions

mantisbt/mantisbt

Packagist

< 2.28.2

2.28.2

Description

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.

NVD description

Weitere Schwachstellen in mantisbt/mantisbt

Alle anzeigen →