CVE-2025-3889 Information

Description

The WordPress Simple Shopping Cart plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to and including 5.1.3 via the ‘process_payment_data’ due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to change the quantity of a product to a negative number which subtracts the product cost from the total order cost. The attack will only work with Manual Checkout mode as PayPal and Stripe will not process payments for a negative quantity.

CVSS Vector

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

Reference

https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cart/tags/5.1.2/wp_shopping_cart.php#L324 https://plugins.trac.wordpress.org/changeset/3284572/ https://www.tipsandtricks-hq.com/ecommerce/simple-shopping-cart-enabling-manual-offline-checkout https://www.tipsandtricks-hq.com/ecommerce/wp-shopping-cart https://www.wordfence.com/threat-intel/vulnerabilities/id/41212533-535e-4a9e-a9b8-1240021a3752?source=cve

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

5.3