Cross-site scripting (XSS) vulnerability in comments.php in PhpWebGallery 1.5.2 and earlier, and possibly 1.6.0, allows remote attackers to inject arbitrary web script or HTML via the keyword parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/27526
http://www.vupen.com/english/advisories/2006/2669
http://www.securityfocus.com/archive/1/439049/100/0/threaded
http://securitytracker.com/id?1016435