A cross-site scripting (XSS) vulnerability in bug_change_status_page.php in MantisBT before 1.3.7 and 2.x before 2.2.1 allows remote attackers to inject arbitrary JavaScript via the 'action_type' parameter.
https://github.com/mantisbt/mantisbt/commit/c272c3f65da9677e505ff692b1f1e476b3afa56e
https://github.com/mantisbt/mantisbt/commit/a2d90ecabf3bcf3aa22ed9dbbecfd3d37902956f
http://www.securitytracker.com/id/1037978
http://www.securityfocus.com/bid/96818