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.
Directory traversal vulnerability in demo/pop3/error.php in Uebimiau Webmail allows remote attackers to determine the existence of arbitrary directories via an absolute pathname and .. (dot dot) in the selected_theme parameter.