External Control of Assumed-Immutable Web Parameter Affecting sylius/paypal-plugin package, versions <1.6.1>=1.7.0, <1.7.1>=2.0.0, <2.0.1
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Test your applications- Snyk IDSNYK-PHP-SYLIUSPAYPALPLUGIN-9460803
- published18 Mar 2025
- disclosed17 Mar 2025
- creditMichel Chowanski
Introduced: 17 Mar 2025
NewCVE-2025-29788 (opens in a new tab)How to fix?
Upgrade sylius/paypal-plugin to version 1.6.1, 1.7.1, 2.0.1 or higher.
Overview
sylius/paypal-plugin is a PayPal plugin for Sylius.
Affected versions of this package are vulnerable to External Control of Assumed-Immutable Web Parameter. The user-input payment amount is not adequately confirmed to be the same between initial entry and payment completion, in ProcessPayPalOrderAction.php and CompletePayPalOrderFromPaymentPageAction.php An attacker can intentionally pay less than the actual total order amount by modifying the item quantity in their shopping cart during checkout.
Workaround
This vulnerability can be worked around by manually patching ProcessPayPalOrderAction, CompletePayPalOrderFromPaymentPageAction, and CaptureAction to include payment amount verification logic.