GHSA-h2wf-967x-gxvw MantisBT: Stored XSS in print_all_bug_page_word.php

• Packagist mantisbt/mantisbt: < 2.28.4 → fixed in 2.28.4

A missing output encoding call in print_all_bug_page_word.php allows any authenticated user to inject arbitrary HTML into an IMG tag's *alt* attribute via an image attachment with a crafted filename such as `probe." onload="alert(1)`. When any user views the HTML export page (print_all_bug_page_word.php?type_page=html&export=1), the rendered IMG tag becomes ``, breaking out of the alt attribute. Impact Cross-site scripting. Impact is limited by MantisBT's Content Security Policy. Patches • https://github.com/mantisbt/mantisbt/commit/bdd0e364f62759de272dfd4c89b4f51d27be9daa Workarounds None Resources • https://mantisbt.org/bugs/view.php?id=37234 Credits MantisBT thanks the Dracosec Research Limited team (Chris Chan, Krecendo Hui, William Lam) for discovering and responsibly reporting the issue.