PHP remote file inclusion vulnerability in pafiledb_constants.php in Download Manager (mxBB pafiledb) integration, as used with phpBB, allows remote attackers to execute arbitrary PHP code via a URL in the module_root_path parameter.
https://www.exploit-db.com/exploits/1774
https://exchange.xforce.ibmcloud.com/vulnerabilities/26496
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-2362
http://www.vupen.com/english/advisories/2006/1776