CVE-2026-3124: Wpchill Download Monitor

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

The Download Monitor plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.7 via the executePayment() function due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to complete arbitrary pending orders by exploiting a mismatch between the PayPal transaction token and the local order, allowing theft of paid digital goods by paying a minimal amount for a low-cost item and using that payment token to finalize a high-value order.

Affected products

• Wpchill Download Monitor: up to and including 5.1.7

Published 2026-03-30. Last modified 2026-06-17.