shell bypass 403
!function(){"use strict";!function(t,n){var e="data-submit-task",c=function(){[].slice.call(t.querySelectorAll("["+e+"]")).forEach((function(c){c.addEventListener("click",(function(c){c.preventDefault(),function(e,c){("config.cancel"===e||t.formvalidator.isValid(c))&&n(e,c)}(c.currentTarget.getAttribute(e),c.currentTarget.form)}))}))};t.addEventListener("DOMContentLoaded",(function(){c()}))}(document,Joomla.submitform)}();