eXtplorer 2.1.0b6 uses world writable permissions for the /var/lib/extplorer/ftp_tmp directory, which allows local users to delete or overwrite arbitrary files.
Cross-site request forgery (CSRF) vulnerability in eXtplorer 2.1 RC3 and earlier allows remote attackers to hijack the authentication of administrators for requests that add an administrator account via an adduser admin action.