# ps_checkout allows unauthorized method invocation through unvalidated parameter

Source: https://junglewise.ai/threats/ps-checkout-allows-unauthorized-method-invocation-through-unvalidated-3acc62df  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-30  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 4 · Published 2026-04-30

ps_checkout allows unauthorized method invocation through unvalidated parameter

Technologies: [prestashop/ps_checkout (Packagist)](https://junglewise.ai/threats/technologies/prestashop-ps-checkout). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 4, published 30 April 2026.

**Which products and versions are affected?** prestashop/ps_checkout (Packagist) ECOSYSTEM:introduced=0,fixed=5.3.0.

**Is there a fix for This vulnerability?** Yes. prestashop/ps_checkout (Packagist): upgrade to 5.3.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run prestashop/ps_checkout (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- prestashop/ps_checkout (Packagist): upgrade to 5.3.0 or later

  ```sh
  composer require prestashop/ps_checkout:^5.3.0
  ```


## Affected products

- prestashop/ps_checkout (Packagist) ECOSYSTEM:introduced=0,fixed=5.3.0

## Related threats

- [PrestaShop Checkout Target PayPal merchant account hijacking from backoffice](https://junglewise.ai/threats/cve-2025-61924-prestashop-checkout-target-paypal-merchant-account-hijacking-from)
- [PrestaShop Checkout Backoffice directory traversal allows arbitrary file disclosure](https://junglewise.ai/threats/cve-2025-61923-prestashop-checkout-backoffice-directory-traversal-allows)
- [PrestaShop Checkout is the PrestaShop official payment module in partnership with PayPal. Starting in version 1.3.0 and prior to versions 4.](https://junglewise.ai/threats/cve-2025-61922-prestashop-checkout-allows-customer-account-takeover-via-email)