Ticket #44317: fix(wp_redirect)__Adding_validation_of_status_code___wp_redirect()_will_now_exit_if_status.patch

src/wp-includes/pluggable.php

@@ -1250 +1250 @@
                         return false;
                 }
 
+                if ( 300 >= $status && 400 < $status ) {
+                        wp_die( __( 'HTTP redirect status code must be a redirection code, 3xx.' ) );
+                }
+
                 $location = wp_sanitize_redirect( $location );
 
                 if ( ! $is_IIS && PHP_SAPI != 'cgi-fcgi' ) {