Uebimiau Webmail 3.2.0-2.0 stores sensitive information under the web root with insufficient access control, which allows remote attackers to download a database with usernames and password hashes via a direct request for system_admin/admin.ucf.
Uebimiau Webmail allows remote attackers to obtain sensitive information via a request to demo/pop3/error.php with an invalid value of the (1) smarty or (2) selected_theme parameter, which reveals the path in various error messages.