[ CVE-2026-89289 · Published 6 Oct 2026 ]
Vulnerability in Unknown Fast Courier
CVSS 5.3
EPSS <1%No fix listed yet
[ Description ]Official description
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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.