PHP remote file inclusion vulnerability in download.php in the Adam van Dongen Forum (com_forum) component (aka phpBB component) 1.2.4RC3 and earlier for Mambo allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.
https://www.exploit-db.com/exploits/1995
http://www.securityfocus.com/archive/1/472005/100/0/threaded