PT-2026-27182 · Mantisbt · Mantisbt

Published 2026-03-23 · Updated 2026-03-23 · CVE-2026-33517

Mitre

CVSS v4.0

8.6

High

AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, when deleting a Tag (tag delete.php), improper escaping of its name when displaying the confirmation message allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript. Version 2.28.1 fixes the issue. Workarounds include reverting commit d6890320752ecf37bd74d11fe14fe7dc12335be9 and/or manually editing language files to remove the sprintf placeholder %1$s from $s tag delete message string.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-33517

Affected Products

Mantisbt

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-33517 · Security Note
• https://github.com/mantisbt/mantisbt/commit/80990f43153167c73f11eb4b2bc7108d0c3d6b46 · Note
• https://github.com/mantisbt/mantisbt/security/advisories/GHSA-fh48-f69w-7vmp · Note
• https://github.com/mantisbt/mantisbt/commit/d6890320752ecf37bd74d11fe14fe7dc12335be9 · Note