The Hostmaster (Aegir) module 6.x-1.x before 6.x-1.9 for Drupal does not properly exit when users do not have access to package/task nodes, which allows remote attackers to bypass intended access restrictions and edit unauthorized nodes.
https://exchange.xforce.ibmcloud.com/vulnerabilities/75715
http://www.securityfocus.com/bid/53588
http://www.openwall.com/lists/oss-security/2012/06/14/3
http://drupal.org/node/1585678