Cross-site scripting (XSS) vulnerability in gravatars/templatetags/gravatars.py in Djblets before 0.7.30 and 0.8.x before 0.8.3 for Django allows remote attackers to inject arbitrary web script or HTML via a user display name.
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.