Multiple cross-site scripting (XSS) vulnerabilities in CONTROLzx HMS (formerly DRZES) 3.3.4 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) dedicatedPlanID parameter to dedicated_order.php, (2) sharedPlanID parameter to shared_order.php, (3) plan_id parameter to customers/server_management.php, and (4) email field to customers/forgotpass.php.