Cross-site scripting (XSS) vulnerability in HTML Purifier before 4.1.1, as used in Mahara and other products, when the browser is Internet Explorer, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
http://www.securityfocus.com/bid/41259
http://wiki.mahara.org/Release_Notes/1.2.5
http://wiki.mahara.org/Release_Notes/1.1.9
http://wiki.mahara.org/Release_Notes/1.0.15
http://secunia.com/advisories/40431
http://secunia.com/advisories/39613
http://repo.or.cz/w/htmlpurifier.git/commitdiff/18e538317a877a0509ae71a860429c41770da230