diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-admin/async-upload.php
--- a/wp/wp-admin/async-upload.php	Tue Jun 09 11:14:17 2015 +0000
+++ b/wp/wp-admin/async-upload.php	Mon Oct 14 17:39:30 2019 +0200
@@ -1,6 +1,6 @@
 <?php
 /**
- * Server-side file upload handler from wp-plupload, swfupload or other asynchronous upload methods.
+ * Server-side file upload handler from wp-plupload or other asynchronous upload methods.
  *
  * @package WordPress
  * @subpackage Administration
@@ -14,20 +14,10 @@
 	define( 'WP_ADMIN', true );
 }
 
-if ( defined('ABSPATH') )
-	require_once(ABSPATH . 'wp-load.php');
-else
+if ( defined( 'ABSPATH' ) ) {
+	require_once( ABSPATH . 'wp-load.php' );
+} else {
 	require_once( dirname( dirname( __FILE__ ) ) . '/wp-load.php' );
-
-if ( ! ( isset( $_REQUEST['action'] ) && 'upload-attachment' == $_REQUEST['action'] ) ) {
-	// Flash often fails to send cookies with the POST or upload, so we need to pass it in GET or POST instead
-	if ( is_ssl() && empty($_COOKIE[SECURE_AUTH_COOKIE]) && !empty($_REQUEST['auth_cookie']) )
-		$_COOKIE[SECURE_AUTH_COOKIE] = $_REQUEST['auth_cookie'];
-	elseif ( empty($_COOKIE[AUTH_COOKIE]) && !empty($_REQUEST['auth_cookie']) )
-		$_COOKIE[AUTH_COOKIE] = $_REQUEST['auth_cookie'];
-	if ( empty($_COOKIE[LOGGED_IN_COOKIE]) && !empty($_REQUEST['logged_in_cookie']) )
-		$_COOKIE[LOGGED_IN_COOKIE] = $_REQUEST['logged_in_cookie'];
-	unset($current_user);
 }
 
 require_once( ABSPATH . 'wp-admin/admin.php' );
@@ -45,23 +35,26 @@
 }
 
 if ( ! current_user_can( 'upload_files' ) ) {
-	wp_die( __( 'You do not have permission to upload files.' ) );
+	wp_die( __( 'Sorry, you are not allowed to upload files.' ) );
 }
 
 // just fetch the detail form for that attachment
 if ( isset($_REQUEST['attachment_id']) && ($id = intval($_REQUEST['attachment_id'])) && $_REQUEST['fetch'] ) {
 	$post = get_post( $id );
 	if ( 'attachment' != $post->post_type )
-		wp_die( __( 'Unknown post type.' ) );
+		wp_die( __( 'Invalid post type.' ) );
 	if ( ! current_user_can( 'edit_post', $id ) )
-		wp_die( __( 'You are not allowed to edit this item.' ) );
+		wp_die( __( 'Sorry, you are not allowed to edit this item.' ) );
 
 	switch ( $_REQUEST['fetch'] ) {
 		case 3 :
 			if ( $thumb_url = wp_get_attachment_image_src( $id, 'thumbnail', true ) )
 				echo '<img class="pinkynail" src="' . esc_url( $thumb_url[0] ) . '" alt="" />';
 			echo '<a class="edit-attachment" href="' . esc_url( get_edit_post_link( $id ) ) . '" target="_blank">' . _x( 'Edit', 'media item' ) . '</a>';
-			$title = $post->post_title ? $post->post_title : wp_basename( $post->guid ); // title shouldn't ever be empty, but use filename just in cas.e
+
+			// Title shouldn't ever be empty, but use filename just in case.
+			$file = get_attached_file( $post->ID );
+			$title = $post->post_title ? $post->post_title : wp_basename( $file );
 			echo '<div class="filename new"><span class="title">' . esc_html( wp_html_excerpt( $title, 60, '&hellip;' ) ) . '</span></div>';
 			break;
 		case 2 :
@@ -89,7 +82,7 @@
 if ( is_wp_error($id) ) {
 	echo '<div class="error-div error">
 	<a class="dismiss" href="#" onclick="jQuery(this).parents(\'div.media-item\').slideUp(200, function(){jQuery(this).remove();});">' . __('Dismiss') . '</a>
-	<strong>' . sprintf(__('&#8220;%s&#8221; has failed to upload due to an error'), esc_html($_FILES['async-upload']['name']) ) . '</strong><br />' .
+	<strong>' . sprintf(__('&#8220;%s&#8221; has failed to upload.'), esc_html($_FILES['async-upload']['name']) ) . '</strong><br />' .
 	esc_html($id->get_error_message()) . '</div>';
 	exit;
 }
@@ -102,7 +95,7 @@
 	$type = $_REQUEST['type'];
 
 	/**
-	 * Filter the returned ID of an uploaded attachment.
+	 * Filters the returned ID of an uploaded attachment.
 	 *
 	 * The dynamic portion of the hook name, `$type`, refers to the attachment type,
 	 * such as 'image', 'audio', 'video', 'file', etc.