cFTP r80 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by templates/session_check.php and certain other files.
code.google.com/p/inspathx/source/browse/trunk/paths_vuln/%21_README
code.google.com/p/inspathx/source/browse/trunk/paths_vuln/cftp-r80
packetstormsecurity.com/files/129666
www.exploit-db.com/exploits/35582
www.openwall.com/lists/oss-security/2011/06/27/6
exchange.xforce.ibmcloud.com/vulnerabilities/99551