source: https://www.securityfocus.com/bid/17359/info

Web-App.Org and Web-App.Net are prone to multiple cross-site scripting vulnerabilities because the applications fail to properly sanitize user-supplied input. 

An attacker may leverage these issues to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may help the attacker steal cookie-based authentication credentials and launch other attacks.

http://www.example.com/cgi-bin/index.cgi?action=[code]
http://www.example.com/cgi-bin/index.cgi?action=&id=[code]
http://www.example.com/cgi-bin/index.cgi?action=forum&board=chitchat&op=&num=[code]
http://www.example.com/cgi-bin/index.cgi?action=&board=[code]
http://www.example.com/cgi-bin/index.cgi?action=&cat=[code]
http://www.example.com/cgi-bin/index.cgi?action=otherarticles&writer=[code]
http://www.example.com/cgi-bin/index.cgi?action=&viewcat=[code]
http://www.example.com/cgi-bin/index.cgi?action=printtopic&id=1&curcatname=&img=[code]
http://www.example.com/cgi-bin/index.cgi?action=printtopic&id=1&curcatname=[code]