Summaryinfo

A vulnerability labeled as critical has been found in wpchill Download Monitor Plugin up to 5.1.7 on WordPress. The affected element is the function executePayment. Such manipulation leads to authorization. This vulnerability is referenced as CVE-2026-3124. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in wpchill Download Monitor Plugin up to 5.1.7 on WordPress. It has been rated as critical. Affected by this issue is the function executePayment. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by Hung Nguyen. The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2026-3124 since 02/24/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/31/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202603-6022) and EUVD (EUVD-2026-17052). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• wpchill

Name

• Download Monitor Plugin

Version

• 5.1.0
• 5.1.1
• 5.1.2
• 5.1.3
• 5.1.4
• 5.1.5
• 5.1.6
• 5.1.7

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CPE 2.2info

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