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.
Improper Neutralization of Input During Web Page Generation 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.