---
id: CVE-2026-103324
title: >-
  The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2
  does not properly verify the authenticity of the payment notifications it
  receives, as the secret used to sign them is empty by default, allowing
  unauthenticated…
summary: >-
  The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2
  does not properly verify the authenticity of the payment notifications it
  receives, as the secret used to sign them is empty by default, allowing
  unauthenticated…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-345
product: Cardinity Payment Gateway for WooCommerce
affected:
  - cardinity_payment_gateway_for_woocommerce >= 3.2.6 < 3.4.2
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T07:17:58.230'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103324'
references:
  - url: 'https://wpscan.com/vulnerability/4e23c520-bb92-47b8-a617-0d334820db50/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-15T07:57:27.844Z'
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-15T10:37:11.849691Z'
---

## Overview

The Cardinity Payment Gateway for WooCommerce WordPress plugin before 3.4.2 does not properly verify the authenticity of the payment notifications it receives, as the secret used to sign them is empty by default, allowing unauthenticated attackers to forge an approved-payment notification and mark arbitrary orders as paid, or force them to failed.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.