Multiple directory traversal vulnerabilities in admin.php3 in PHPMyChat 0.14.5 allow remote attackers with administrative privileges to read arbitrary files via a .. (dot dot) in the (1) sheet and (2) What parameters.
http://securitytracker.com/id?1010515
http://secunia.com/advisories/11894
http://archives.neohapsis.com/archives/bugtraq/2004-06/0252.html