Semantically-Interconnected Online Communities (SIOC) 5.x before 5.x-1.2 and 6.x before 6.x-1.1, a module for Drupal, does not properly implement menu and database APIs, which allows remote attackers to obtain usernames and read hashed emails and comments via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/45762
http://www.securityfocus.com/bid/31658