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.

Classification

CVE ID: CVE-2025-3530

CVSS Base Severity: HIGH

CVSS Base Score: 7.5

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Products

Vendor: mra13

Product: WordPress Simple Shopping Cart

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.1% (probability of being exploited)

EPSS Percentile: 29.06% (scored less or equal to compared to others)

EPSS Date: 2025-05-22 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3530
https://www.wordfence.com/threat-intel/vulnerabilities/id/e0a3910b-adc4-4633-a6a1-32ba50894be4?source=cve
https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.1.2/wp_shopping_cart.php#L171
https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.1.2/wp_shopping_cart.php#L156
https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.1.2/wp_shopping_cart.php#L165
https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.1.2/wp_shopping_cart.php#L261
https://www.tipsandtricks-hq.com/wordpress-simple-paypal-shopping-cart-plugin-768
https://plugins.trac.wordpress.org/changeset/3275373/

Timeline