LiquidFiles before 4.1.2 supports FTP SITE CHMOD for mode 6777 (setuid and setgid), which allows FTPDrop users to execute arbitrary code as root by leveraging the Actionscript feature and the sudoers configuration.
HTML and SMTP injections on the registration page of LiquidFiles versions 3.7.13 and below, allow an attacker to perform more advanced phishing attacks against an organization.