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OpenAdvisories
Medium · 5.3 CVE-2026-103331 EUVD-2026-111696GHSA-c6r8-q9rq-vw5v

UniPAY Payment Gateway For WooCommerce < 2.4 - Unauthenticated Order Payment Forgery via Empty IPN Secret

Published Oct 28, 2026 · Updated Nov 5, 2026 · Assigned by WPScan

Description

The UniPAY Payment Gateway For WooCommerce WordPress plugin before 2.4 does not properly verify the authenticity of payment notifications, as their signature is checked against a merchant secret that is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary orders as paid.

Affected products

VendorProductAffectedFixed
— UniPAY Payment Gateway For WooCommerce < 2.4 2.4

References