Multiple cross-site scripting (XSS) vulnerabilities in PHP-Nuke 6.x through 7.6 allow remote attackers to inject arbitrary web script or HTML via the (1) username parameter in the Your_Account module, (2) avatarcategory parameter in the Your_Account module, or (3) lid parameter in the Downloads module.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11994
http://www.securityfocus.com/bid/7570