Cross-site scripting (XSS) vulnerability in MantisBT Filter API in MantisBT versions before 1.2.19, and versions 2.0.0-beta1, 1.3.0-beta1 allows remote attackers to inject arbitrary web script or HTML via the 'view_type' parameter.
https://mantisbt.org/bugs/view.php?id=21611
https://github.com/mantisbt/mantisbt/commit/7086c2d8b4b20ac14013b36761ac04f0abf21a4e