CVE-2020-16266: MantisBT XSS issue on the view_all_bug_page.php

May 24, 2022 (updated May 29, 2025)

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).

References

github.com/advisories/GHSA-4rrc-5vp6-m3f6
github.com/mantisbt/mantisbt
github.com/mantisbt/mantisbt/commit/9ef8f23a8119221d010251112b1255630a46d903
mantisbt.org/blog/archives/mantisbt/665
mantisbt.org/bugs/view.php?id=27056
nvd.nist.gov/vuln/detail/CVE-2020-16266

Code Behaviors & Features

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