The "menu sync" function in the WPML plugin before 3.1.9 for WordPress allows remote attackers to delete arbitrary posts, pages, and menus via a crafted request to sitepress-multilingual-cms/menu/menus-sync.php.
https://wpml.org/2015/03/wpml-security-update-bug-and-fix/
http://www.securityfocus.com/archive/1/534862/100/0/threaded