account.php in Adam Scheinberg Flip 3.0 and earlier allows remote attackers to create administrative accounts via the un parameter in a register action.

Adam Scheinberg Flip 3.0 and earlier stores sensitive information under the web root with insufficient access control, which allows remote attackers to download a file containing login credentials via a direct request for var/users.txt.

PHP remote file inclusion vulnerability in config.php in Adam Scheinberg Flip 3.0 allows remote attackers to execute arbitrary PHP code via a URL in the incpath parameter.