Unrestricted file upload vulnerability in inc/amfphp/administration/banneruploaderscript.php in the WP EasyCart (aka WordPress Shopping Cart) plugin before 3.0.9 allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in products/banners/.
https://wordpress.org/plugins/wp-easycart/changelog/