PHP remote file inclusion vulnerability in modules/userstop/userstop.php in ExBB Italia 0.2 and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary PHP code via a URL in the exbb[home_path] parameter.
https://www.exploit-db.com/exploits/2273
https://exchange.xforce.ibmcloud.com/vulnerabilities/28624
http://www.vupen.com/english/advisories/2006/3412