PHP remote file inclusion vulnerability in includes/functions_user_viewed_posts.php in the Nivisec User Viewed Posts Tracker module 1.0 and earlier for phpBB allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.
https://www.exploit-db.com/exploits/2483
https://exchange.xforce.ibmcloud.com/vulnerabilities/29383
http://www.vupen.com/english/advisories/2006/3947
http://www.securityfocus.com/archive/1/448445/100/0/threaded
http://www.securityfocus.com/archive/1/447932/100/0/threaded
http://www.nivisec.com/article.php?l=vi&ar=19