---
id: CVE-2026-103329
title: >-
  The Super Payments WordPress plugin before 1.43.1 does not properly verify the
  authenticity of incoming payment webhook notifications, as the signing key
  used to validate their signature is empty by default, allowing unauthenticated
  atta…
summary: >-
  The Super Payments WordPress plugin before 1.43.1 does not properly verify the
  authenticity of incoming payment webhook notifications, as the signing key
  used to validate their signature is empty by default, allowing unauthenticated
  atta…
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-347
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T15:17:06.813'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103329'
references:
  - url: 'https://wpscan.com/vulnerability/aefba87d-fa4c-4b7c-9436-6e79e966e8a5/'
    label: contact@wpscan.com
tags:
  - nvd
ingestedAt: '2026-10-09T12:53:29.302Z'
---

## Overview

The Super Payments WordPress plugin before 1.43.1 does not properly verify the authenticity of incoming payment webhook notifications, as the signing key used to validate their signature is empty by default, allowing unauthenticated attackers to forge a valid signature and mark arbitrary WooCommerce orders as paid without payment.

## Remediation

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