CVE-2026-33548
CVE-2026-33548 · MantisBT has Stored HTML Injection / XSS when displaying Tags in Timeline
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, improper escaping of tag names retrieved from History in Timeline (my_view_page.php) allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript, when displaying a tag that has been renamed or deleted. Version 2.28.1 contains a patch. Workarounds include editing offending History entries (using SQL) and wrapping `$this->tag_name` in a string_html_specialchars() call in IssueTagTimelineEvent::html().
CVSS 8.6 · High · EPSS 0.2% · Fix available
- Published
- Updated
Stack: php
Affected products and versions
mantisbt
- Versions
- = 2.28.0: Affected
No fix published
mantisbt/mantisbt Packagist
- Versions
- 2.28.0
- 2.28.1
- Affected ranges
- ECOSYSTEM: ≥ 2.28.0, < 2.28.2
Update to 2.28.2