Ticket #52387: 52387.diff

src/wp-includes/media.php

@@ -3424 +3424 @@
 
                 if ( isset( $attachments[ $k ] ) ) {
                         $attachment_id = $attachments[ $k ]->ID;
-                        $output        = wp_get_attachment_link( $attachment_id, $size, true, false, $text );
+                        $attr          = array( 'alt' => get_the_title( $attachment_id ) );
+                        $output        = wp_get_attachment_link( $attachment_id, $size, true, false, $text, $attr );
                 }
         }