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

7.5
External Control of Assumed-Immutable Web Parameter
CVE CVE-2025-3530
CVSS 7.5 (High)
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.

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Vulnerability Details for Simple Shopping Cart

Software Type Plugin
Software Slug wordpress-simple-paypal-shopping-cart (view on wordpress.org)
Patched? Yes
Remediation Update to version 5.1.3, or a newer patched version
Affected Version
  • <= 5.1.2
Patched Version
  • 5.1.3

Recent vulnerabilities in Simple Shopping Cart

# Title CVE ID CVSS Researchers Date
1 Simple Shopping Cart <= 5.2.9 - Unauthenticated Insecure Direct Object Reference CVE-2026-48868 5.3 Austin Ginder June 2, 2026
2 Simple Shopping Cart <= 5.2.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'wpsc_display_product' Shortcode CVE-2026-0552 6.4 Muhammad Yudha - DJ April 3, 2026
3 WordPress Simple PayPal Shopping Cart <= 5.1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode CVE-2025-3890 6.4 Jack Taylor April 30, 2025
4 WordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference via 'quantity' CVE-2025-3889 5.3 Jack Taylor April 30, 2025
5 WordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference CVE-2025-3874 6.5 Jack Taylor April 30, 2025
6 WordPress Simple PayPal Shopping Cart <= 5.1.2 - Unauthenticated Information Exposure via file_url Parameter CVE-2025-3529 8.2 Jack Taylor April 22, 2025
7 WordPress Simple Shopping Cart <= 5.0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-12622 6.4 Muhammad Yudha - DJ December 23, 2024
8 WordPress Simple Shopping Cart <= 4.7.1 - Authenticated(Administrator+) Stored Cross-Site Scripting CVE-2023-6497 4.4 Webbernaut January 26, 2024
9 WP Simple Shopping Cart <= 4.6.3 - Information Disclosure CVE-2023-1431 5.3 Ayoub Safa March 16, 2023
10 WordPress Simple PayPal Shopping Cart <= 4.6.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode CVE-2022-4672 6.4 István Márton December 27, 2022

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