Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tipsandtricks-Hq | Wordpress Simple Paypal Shopping Cart | < 5.1.4 |
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/wordpress-simple-paypal-shopping-cartProduct
- https://plugins.trac.wordpress.org/changeset/3284572/Patch
- https://www.tipsandtricks-hq.com/ecommerce/simple-shopping-cart-enabling-manual-Product
- https://www.tipsandtricks-hq.com/ecommerce/wp-shopping-cartProduct
- https://www.wordfence.com/threat-intel/vulnerabilities/id/41212533-535e-4a9e-a9bThird Party Advisory
FAQ
What is CVE-2025-3889?
CVE-2025-3889 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 vali...
How severe is CVE-2025-3889?
CVE-2025-3889 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-3889?
Check the references section above for vendor advisories and patch information. Affected products include: Tipsandtricks-Hq Wordpress Simple Paypal Shopping Cart.