The ec_ajax_update_option and ec_ajax_clear_all_taxrates functions in inc/admin/admin_ajax_functions.php in the WP EasyCart plugin 1.1.30 through 3.0.20 for WordPress allow remote attackers to gain administrator privileges and execute arbitrary code via the option_name and option_value parameters.

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/.

The EasyCart (wp-easycart) plugin before 2.0.6 for WordPress allows remote attackers to obtain configuration information via a direct request to inc/admin/phpinfo.php, which calls the phpinfo function.