Multiple cross-site scripting (XSS) vulnerabilities in Mambo 4.6.2 and 4.6.5, when register_globals is enabled, allow remote attackers to inject arbitrary web script or HTML via the (1) query string to mambots/editors/mostlyce/jscripts/tiny_mce/filemanager/connectors/php/connector.php and the (2) mosConfig_sitename parameter to administrator/popups/index3pop.php.