source: https://www.securityfocus.com/bid/10812/info
 
RiSearch and RiSearch Pro are reported prone to an open proxy vulnerability. It is reported that the issue presents itself due to a lack of sufficient sanitization performed on user supplied URI parameters.
 
A remote attacker may exploit this condition in order to launch attacks against local and public services in the context of the site that is hosting the vulnerable script.

http://www.example.com/cgi-bin/search/show.pl?url=file:/etc/passwd