PHP remote file inclusion vulnerability in xt_counter.php in Xt-Stats 2.3.x up to 2.4.0.b3 allows remote attackers to execute arbitrary PHP code via a URL in the server_base_dir parameter.
https://www.exploit-db.com/exploits/3209
https://exchange.xforce.ibmcloud.com/vulnerabilities/31871
http://www.vupen.com/english/advisories/2007/0387