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.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.