CVE-2025-3889CWE-639

WordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference via 'quantity'

Medium · published May 1, 2025

CVSS v3.1
5.3
EPSS
0%
Percentile
28.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00359 · 28.5th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2025-05-01T11:11Z
EPSS history
Timeline
  • 01 MAY 11:11Z
    WordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference via 'quantity'
    cvelistv5