CVE-2025-3889

MediumCVSS 5.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-639

Affected software

Vendor	Product	Versions
mra13	Simple Shopping Cart	<= 5.1.3

References

Timeline

Published: May 1, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

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