Multiple PHP remote file inclusion vulnerabilities in Mazen's PHP Chat 3.0.0 allow remote attackers to execute arbitrary PHP code via a URL in the basepath parameter to (1) ITX.php, (2) IT_Error.php, or (3) IT.php in include/pear/.
https://www.exploit-db.com/exploits/3994
https://exchange.xforce.ibmcloud.com/vulnerabilities/34536
http://www.vupen.com/english/advisories/2007/1968