Cross-site scripting (XSS) vulnerability in the Block Class module 7.x-2.x before 7.x-2.2 for Drupal allows remote authenticated users with the "Administer block classes" permission to inject arbitrary web script or HTML via a class name.
https://www.drupal.org/node/2636502
https://www.drupal.org/node/2636498
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182953.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182886.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182535.html