GHSA-6jh4-47v2-4g37Medium

MantisBT has Potential Referer-Based Reflected HTML Injection / XSS in Tag Update Page

Published
May 11, 2026
Last Modified
June 8, 2026

🔗 CVE IDs covered (1)

📋 Description

Improper escaping of the redirection page (retrieved from the request's Referer header) allows an attacker to inject HTML.

While this is generally not directly actionable as modern browsers will URL-encode special characters, on some specific server configurations this could poison the cache, leading to cross-site scripting.

Impact

Cross-site scripting (XSS).

Patches

  • b1ebc57763f104eb5f541b7b4d1ce6948168abd9

Workarounds

None

Credits

Thanks to siunam (Tang Cheuk Hei) for discovering and responsibly reporting the issue.

🎯 Affected products1

  • composer/mantisbt/mantisbt:<= 2.28.1

🔗 References (5)