Multiple PHP remote file inclusion vulnerabilities in phpBG 0.9.1 allow remote attackers to execute arbitrary PHP code via a URL in the rootdir parameter to (1) intern/admin/other/backup.php, (2) intern/admin/, (3) intern/clan/member_add.php, (4) intern/config/key_2.php, or (5) intern/config/forum.php.
https://www.exploit-db.com/exploits/4340
https://exchange.xforce.ibmcloud.com/vulnerabilities/36348