source: https://www.securityfocus.com/bid/1720/info

Talentsoft Web+ is a web application server that can be integrated with various web technologies.

A vulnerability exists in one of the CGI applications implemented by Web+. It is possible for a remote user to retrieve the internal IP address in a NAT environment running Web+. Requesting a specially crafted URL containing the 'about' argument will disclose the internal IP address behind the NAT.

Successful exploitation of this vulnerability could aid in further and more complicated attacks against the target site. 

http://target/cgi-bin/webplus.exe?about