Description
The AlternativeCommerce PayPal Checkout module provides an AlternativeCommerce method to embed payment services from PayPal.
The module does not sufficiently validate incoming PayPal webhook requests. An unauthenticated attacker can submit a crafted request that references a payment record, causing the associated order to be marked as paid without completing a payment.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | drupal/basket_paypal | < 1.1.1 | 1.1.1 | DRUPAL-CONTRIB-2026-300 |
Advisories 1
- WID-SEC-2026-4352 Drupal Erweiterungen: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 4, 2026