Multiple cross-site scripting (XSS) vulnerabilities in PHPChain 1.0 and earlier allow remote attackers to inject arbitrary web script or HTML via the catid parameter to (1) settings.php or (2) cat.php. NOTE: certain parameter values also trigger path disclosure.
https://exchange.xforce.ibmcloud.com/vulnerabilities/34018
http://www.vupen.com/english/advisories/2007/1647
http://www.securityfocus.com/bid/23761
http://secunia.com/advisories/25128