CVE-2026-89289 – The Fast Courier WordPress plugin through 5.2.3 does not restrict an unauthenticated REST

The Fast Courier WordPress plugin through 5.2.3 does not restrict an unauthenticated REST route that writes order fulfillment data, allowing unauthenticated attackers to overwrite the courier status and customer-facing tracking details of any WooCommerce order by supplying its id.