Cross-site scripting (XSS) vulnerability in the administration page in the Flag module 7.x-3.x before 7.x-3.1 for Drupal allows remote authenticated users with the "Administer flags" permission to inject arbitrary web script or HTML via the flag title.
https://drupal.org/node/2076221
https://drupal.org/node/2075287
http://seclists.org/fulldisclosure/2013/Aug/287
http://archives.neohapsis.com/archives/bugtraq/2013-08/0184.html