Directory traversal vulnerability in setcookie.php in PBLang 4.65, and possibly earlier versions, allows remote attackers to read arbitrary files via ".." sequences and "%00" (trailing null byte) in the u parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/22185
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-2892
http://www.securityfocus.com/bid/14765
http://securitytracker.com/alerts/2005/Sep/1014861.html