Multiple cross-site scripting (XSS) vulnerabilities in the course-tags functionality in tag/coursetags_more.php in Moodle 2.0.x before 2.0.2 allow remote attackers to inject arbitrary web script or HTML via the (1) sort or (2) show parameter.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.