PHP remote file inclusion vulnerability in includes/functions_mod_user.php in phpBB Insert User 0.1.2 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.
https://www.exploit-db.com/exploits/2525
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-7082
http://www.securityfocus.com/bid/20493
http://www.securityfocus.com/archive/1/448542/100/0/threaded