---
id: CVE-2026-103299
title: >-
  nexi Alpha Bank for WooCommerce <= 2.2.0 - Unauthenticated Payment
  Confirmation Forgery via Empty Shared Secret
summary: >-
  The Payment Gateway  WordPress plugin through 2.2.0 does not ensure a shared
  secret is configured before using it to authenticate the bank's
  payment-notification callback, allowing unauthenticated attackers to forge a
  valid notification …
severity: none
cwe:
  - CWE-287
product: Payment Gateway
affected:
  - payment_gateway <= 2.2.0
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T06:00:18.758Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-103299'
references:
  - url: 'https://wpscan.com/vulnerability/0a1c3070-181d-49ea-9488-d0d7e4be419c/'
tags:
  - cve.org
ingestedAt: '2026-10-26T07:20:03.483Z'
---

## Overview

The Payment Gateway  WordPress plugin through 2.2.0 does not ensure a shared secret is configured before using it to authenticate the bank's payment-notification callback, allowing unauthenticated attackers to forge a valid notification and mark any WooCommerce order as paid on installs where the secret has not been set, and the same callback lets them move any pending order to a failed state whether or not the secret is configured.

## Affected

- `payment_gateway <= 2.2.0`

## Remediation

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