PHP remote file inclusion vulnerability in shoutbox.php in Shoutbox 1.0 allows remote attackers to execute arbitrary PHP code via a URL in the root parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35921
http://www.vupen.com/english/advisories/2007/2835
http://www.securityfocus.com/archive/1/475960/100/0/threaded
http://securityreason.com/securityalert/2997