Cross-site scripting (XSS) vulnerability in index.php in Elxis CMS 2008.1 revision 2204 allows remote attackers to inject arbitrary web script or HTML via the (1) PATH_INFO or the (2) option, (3) Itemid, (4) id, (5) task, (6) bid, and (7) contact_id parameters.  NOTE: the error might be located in modules/mod_language.php, and index.php might be the interaction point.