/ * Original reprint please indicate https://www.wpon.cn.11294.html By xiarou page * / One example would be to inject the payload 1 union all select database(),2,3,1,5 into the form_id GET parameter of the function MailerLite_Shortcode::redirect_to_form_edit to be redirected to /wp-admin/admin.php?page=mailerlite_main&view=edit&id=.