The OG Features module 6.x-1.x before 6.x-1.4 for Drupal does not properly override pages that have an access callback set to false, which allows remote attackers to bypass intended access restrictions via a request.
https://exchange.xforce.ibmcloud.com/vulnerabilities/89458
https://drupal.org/node/2149791
https://drupal.org/node/2149743