Multiple cross-site scripting (XSS) vulnerabilities in the web-authentication function on the Cisco NAC Appliance 4.9.2 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) cm or (2) uri parameters to (a) perfigo_weblogin.jsp, or the (3) cm, (4) provider, (5) session, (6) uri, (7) userip, or (8) username parameters to (b) perfigo_cm_validate.jsp, aka Bug ID CSCud15109.