CVE-2025-3889 WordPress Simple PayPal Shopping Cart <= 5.1.3 - Insecure Direct Object Reference via 'quantity'

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 'processpaymentdata' due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to change the...