source: http://www.securityfocus.com/bid/8242/info

cgitest.html has been reported prone to cross-site scripting attacks. The issue occurs due to a lack of sufficient sanitization performed on data supplied to the cgitest.html script.

This issue could be exploited to cause hostile HTML and script code to be rendered in the browser of a user who is enticed to visit a malicious link to the vulnerable script.

http://www.example.com/cgitest.html?<script>wi ndow.location="/cgi-bin/cgitest.exe?|<blahblah>%00";</script>

http://www.example.com/cgitest.html?<script>(document.cookie)</script>