Cross-site scripting (XSS) vulnerability in Advanced Forum 5.x before 5.x-1.1 and 6.x before 6.x-1.1, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
http://www.vupen.com/english/advisories/2009/1769
http://secunia.com/advisories/35682