Ticket #39650: 39650.6.patch

wp-includes/comment.php

@@ -3005 +3005 @@
                  * @param int $comment_post_ID Post ID.
                  */
                 do_action( 'comment_on_draft', $comment_post_ID );
+                
+                if ( current_user_can( 'read_post', $comment_post_ID ) ) {
+                        return new WP_Error( 'comment_on_draft', __( 'Sorry, comments are not allowed for this item.' ), 403 );
+                } else {
+                        return new WP_Error( 'comment_on_draft' );
+                }
 
-                return new WP_Error( 'comment_on_draft' );
-
         } elseif ( post_password_required( $comment_post_ID ) ) {
 
                 /**