PHP remote file inclusion vulnerability in forum.php in FreeForum 0.9.7 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the fpath parameter.
https://www.exploit-db.com/exploits/2484
https://exchange.xforce.ibmcloud.com/vulnerabilities/29391
http://www.vupen.com/english/advisories/2006/3955
http://www.securityfocus.com/archive/1/447931/100/0/threaded