Multiple directory traversal vulnerabilities in the return_application_language function in include/utils/utils.php in vtiger CRM before 5.2.1 allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in (1) the lang_crm parameter to phprint.php or (2) the current_language parameter in an Accounts Import action to graph.php.
http://www.ush.it/team/ush/hack-vtigercrm_520/vtigercrm_520.txt
http://www.securityfocus.com/archive/1/514846/100/0/threaded
http://wiki.vtiger.com/index.php/Vtiger521:Release_Notes
http://vtiger.com/blogs/2010/11/16/vtiger-crm-521-is-released/