U&M Software Signup 1.0 and 1.1 does not require administrative authentication for all scripts in the admin/ directory, which allows remote attackers to have an unspecified impact via a direct request to (1) adminstart.php, (2) admineventtype.php, (3) admineventdetails.php, (4) admineventlist.php, (5) adminuserslist.php, (6) adminleaderslist.php, (7) admindatabase.php, and possibly (8) index.php.