CVE-2026-84091: Unknown Sumit Payment Gateway For Woocommerce

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The SUMIT Payment Gateway for WooCommerce WordPress plugin before 4.0.0 does not verify with the payment provider that a payment notification is genuine before marking the corresponding order as paid, allowing unauthenticated users to mark a pending order paid without completing payment.

Affected products

• Unknown Sumit Payment Gateway For Woocommerce: before 4.0.0 (fixed in 4.0.0)

Published 2026-09-23. Last modified 2026-09-24.