Cross-site scripting (XSS) vulnerability in GeoClassifieds Enterprise 2.0.5.2 and earlier allows remote attackers to inject arbitrary web script and HTML via the (1) b[username] and (2) c parameters to (a) index.php, the b[username] parameter to (b) admin/index.php, and (3) c[phone] parameter to register.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28041
http://www.vupen.com/english/advisories/2006/3065
http://www.securityfocus.com/archive/1/441294/100/0/threaded