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OpenAdvisories
High · 7.5 CVE-2026-44657 EUVD-2026-33023GHSA-p6fr-rxq7-xcg8

MantisBT: Stored XSS in File Download

Published May 28, 2026 · Updated May 29, 2026 · Assigned by GitHub_M

Description

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Prior to 2.28.2, using show_inline=1 parameter and a valid file_show_inline_token CSRF token on file_download.php, an attacker can execute code by uploading a crafted XHTML attachment referencing a JavaScript attachment. This vulnerability is fixed in 2.28.2.

Affected products

VendorProductAffectedFixed
mantisbt mantisbt < 2.28.2 —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist mantisbt/mantisbt < 2.28.2 2.28.2 GHSA-p6fr-rxq7-xcg8

References