CVE-2026-34744

EPSS 0.01%

MantisBT has an authorization bypass that allows reading attachments after losing access to a private issue

Published: 5/11/2026Modified: 5/11/2026

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.

Affected packages (1)

Packagist/mantisbt/mantisbtfrom 0, < 2.28.2

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	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 (4)

PATCHhttps://github.com/mantisbt/mantisbt
WEBhttps://github.com/mantisbt/mantisbt/commit/de7bdeec36de066235e38a77bf056917d951c84d
WEBhttps://github.com/mantisbt/mantisbt/security/advisories/GHSA-rmp5-5jj7-gmvf
WEBhttps://mantisbt.org/bugs/view.php?id=36977