---
id: CVE-2026-104641
title: >-
  Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified
  PayPal IPN Recipient
summary: >-
  The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a
  PayPal payment notification is for a payment received by the site owner's
  PayPal account in its default configuration, allowing unauthenticated
  attackers to ha…
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'
cvssSource: cna
cwe:
  - CWE-345
product: Simple Shopping Cart
affected:
  - simple_shopping_cart < 5.3.3
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-21T10:11:52.979214Z'
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T10:14:55.498Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-104641'
references:
  - url: 'https://wpscan.com/vulnerability/8227f34e-d2ae-4eb4-9984-aeb07d93ed25/'
tags:
  - cve.org
ingestedAt: '2026-10-21T09:46:15.400Z'
---

## Overview

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an account they control.

## Affected

- `simple_shopping_cart < 5.3.3`

## Remediation

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