Alguest is a guestbook programmed in PHP, there is a major flaw in it which enables any user to access the admin panel. The script can be downloaded from http://www.hotscripts.com/cgi-bin/dload.cgi?ID=14105 It has a flaw in which cookie data isn't properly checked for administrator rights (username, password), it only checks if the cookie is present "elseif(isset($admin))" Therefore anyone can just create a cookie and gain access to administrator privledges. A solution might be this "elseif(isset($HTTP_COOKIE_VARS['admin'] == $password && $username))" but I haven't tested it so I can not guarantee it.
