Multiple PHP remote file inclusion vulnerabilities in the NFN Address Book (comnfnaddressbook) 0.4 component for Mambo and Joomla! allow remote attackers to execute arbitrary PHP code via a URL in the mosConfigabsolutepath parameter to (1) components/comnfnaddressbook/nfnaddressbook.php or (2) administrator/components/comnfnaddressbook/nfnaddressbook.php.