CVE-2026-16738: Unknown Conekta Payment Gateway

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The Conekta Payment Gateway WordPress plugin before 6.2.2 does not verify the authenticity of incoming payment gateway webhook notifications, nor bind the confirmed payment to the targeted order or verify its amount, allowing unauthenticated attackers to mark arbitrary orders as paid without payment.

Affected products

• Unknown Conekta Payment Gateway: before 6.2.2 (fixed in 6.2.2)

Published 2026-08-22. Last modified 2026-08-26.