PHP remote file inclusion vulnerability in include/flatnux.php in FlatnuX CMS (aka Flatnuke3) 2009-01-27 and 2009-02-04, when register_globals is enabled and magic_quotes_gpc disabled, allows remote attackers to execute arbitrary PHP code via a URL in the _FNROOTPATH parameter to (1) index.php and (2) filemanager.php.