** DISPUTED ** Cross-site request forgery (CSRF) vulnerability in Drupal 7.12 and earlier allows remote attackers to hijack the authentication of arbitrary users for requests that end a session via the user/logout URI. NOTE: the vendor disputes the significance of this issue by considering the \security benefit against platform complexity and performance impact\ and concluding that a change to the logout behavior is not planned because \for most sites it is not worth the trade-off.\