source: https://www.securityfocus.com/bid/7557/info

IT has been reported that Happymall E-Commerce is prone to cross-site scripting attacks. The problem occurs due to insufficient sanitization of user-supplied URI parameters. As a result, it may be possible for an attacker to execute arbitrary script code within the browser of a legitimate user visiting the site. 

http://www.target.com/shop/normal_html.cgi?file=<script>alert("XSS")</script>