	wp.updates.requestFilesystemCredentials = function( event ) {
		if ( wp.updates.updateDoneSuccessfully === false ) {
			/*
			 * For the plugin install screen, return the focus to the install button
			 * after exiting the credentials request modal.
			 */
			if ( 'plugin-install' === pagenow && event ) {
				wp.updates.$elToReturnFocusToFromCredentialsModal = $( event.target );
			}

			wp.updates.updateLock = true;

			wp.updates.requestForCredentialsModalOpen();
		}
	};
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.