WordPress Simple PayPal Shopping Cart <= 5.1.2 - Unauthenticated Product Price Manipulation

External Control of Assumed-Immutable Web Parameter
CVE CVE-2025-3530
CVSS High (7.5)
Publicly Published April 22, 2025
Last Updated April 23, 2025
Researcher Jack Taylor
Description

The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to product price manipulation in all versions up to, and including, 5.1.2. This is due to a logic flaw involving the inconsistent use of parameters during the cart addition process. The plugin uses the parameter 'product_tmp_two' for computing a security hash against price tampering while using 'wspsc_product' to display the product, allowing an unauthenticated attacker to substitute details from a cheaper product and bypass payment for a more expensive item.

References

1 affected software package

Software Type Plugin
Software Slug wordpress-simple-paypal-shopping-cart (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 5.1.2
Patched Version
  • 5.1.3
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