WordPress Plugin BackWPup is prone to a vulnerability which can be exploited to execute local or remote code on the web server. The Input passed to the component "wp_xml_export.php" via the "wpabs" variable allows the inclusion and execution of local or remote PHP files as long as a "_nonce" value is known. The "_nonce" value relies on a static constant which is not defined in the script meaning that it defaults to the value "822728c8d9". WordPress Plugin BackWPup version 1.6.1 is vulnerable; other versions may also be affected.


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