An XSS issue was discovered in MantisBT before 2.24.2. Improper escaping on view_all_bug_page.php allows a remote attacker to inject arbitrary HTML into the page by saving it into a text Custom Field, leading to possible code execution in the browser of any user subsequently viewing the issue (if CSP settings allow it).
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16266
Reference (s):
- https://mantisbt.org/blog/archives/mantisbt/665
- https://mantisbt.org/bugs/view.php?id=27056