Ticket #38622: 38622.diff

wp-includes/comment.php

@@ -2098 +2098 @@
                 return $commentdata['comment_approved'];
         }
 
+        $check_max_lengths = wp_check_comment_data_max_lengths( $commentdata );
+        if ( is_wp_error( $check_max_lengths ) ) {
+                if ( true === $avoid_die ) {
+                        return $check_max_lengths;
+                } else {
+                        if ( wp_doing_ajax() ) {
+                                die( $check_max_lengths->get_error_message() );
+                        }
+
+                        wp_die( $check_max_lengths->get_error_message(), $check_max_lengths->get_error_code() );
+                }
+        }
+
         $comment_ID = wp_insert_comment( $commentdata );
         if ( ! $comment_ID ) {
                 $fields = array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content' );