Froxlor through 0.10.22 does not perform validation on user input passed in the customermail GET parameter. The value of this parameter is reflected in the login webpage, allowing the injection of arbitrary HTML tags.
An issue was discovered in Froxlor before 0.10.14. Remote attackers with access to the installation routine could have executed arbitrary code via the database configuration options that were passed unescaped to exec, because of _backupExistingDatabase in install/lib/class.FroxlorInstall.php.
An issue was discovered in Froxlor before 0.10.14. It created files with static names in /tmp during installation if the installation directory was not writable. This allowed local attackers to cause DoS or disclose information out of the config files, because of _createUserdataConf in install/lib/class.FroxlorInstall.php.