The Context module 6.x-3.x before 6.x-3.1 and 7.x-3.x before 7.x-3.0-beta6 for Drupal does not properly restrict access to block content, which allows remote attackers to obtain sensitive information via a crafted request.
http://www.securityfocus.com/bid/56993
http://www.openwall.com/lists/oss-security/2012/12/20/1
http://secunia.com/advisories/51517
http://drupalcode.org/project/context.git/commitdiff/d8bf8b6