PHP remote file inclusion vulnerability in tasks/send_queued_emails.php in NuclearBB Alpha 2, when register_globals is enabled, allows remote attackers to execute arbitrary PHP code via a URL in the root_path parameter.
https://www.exploit-db.com/exploits/4395
https://exchange.xforce.ibmcloud.com/vulnerabilities/36556
http://www.securityfocus.com/archive/1/479086/100/0/threaded