The Commons Wikis module before 7.x-3.1 for Drupal, as used in the Commons module before 7.x-3.1, does not properly restrict access to groups, which allows remote attackers to post arbitrary content to groups via unspecified vectors.
Category : Permissions, Privileges, and Access Controls Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.