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
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-SYLIUSPAYPALPLUGIN-9460803
- published18 Mar 2025
- disclosed17 Mar 2025
- creditMichel Chowanski
Introduced: 17 Mar 2025
CVE-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.