Cross-site request forgery (CSRF) vulnerability in the Subuser module before 6.x-1.8 for Drupal allows remote attackers to hijack the authentication of arbitrary users for requests that switch the user to a subuser via unspecified vectors.
http://www.openwall.com/lists/oss-security/2012/10/07/1
http://www.openwall.com/lists/oss-security/2012/10/04/6