Multiple directory traversal vulnerabilities in PHP-Fusion 6.00.306 allow remote attackers to include and execute arbitrary local files via (1) a .. (dot dot) in the settings[locale] parameter in infusions/last_seen_users_panel/last_seen_users_panel.php, and (2) a ..  (dot dot) in the localeset parameter in setup.php.  NOTE: the vendor states that this issue might exist due to problems in third party local files.