Directory traversal vulnerability in check_lang.php in Yet Another NOCC (YANOCC) 0.1.0 and earlier allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the lang parameter.
https://www.exploit-db.com/exploits/8020
https://exchange.xforce.ibmcloud.com/vulnerabilities/48608
http://www.vupen.com/english/advisories/2009/0383