mehigh Checkout Field Editor Plugin up to 3.8.0 on WordPress File Upload ajax_remove_uploaded attachment_id improper authorization

Summaryinfo

A vulnerability classified as critical has been found in mehigh Checkout Field Editor Plugin up to 3.8.0. This affects the function ajax_remove_uploaded of the component File Upload. The manipulation of the argument attachment_id leads to improper authorization. This vulnerability is traded as CVE-2026-122041. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in mehigh Checkout Field Editor Plugin up to 3.8.0 and classified as critical. This issue affects the function ajax_remove_uploaded of the component File Upload. The manipulation of the argument attachment_id with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is integrity, and availability. The summary by CVE is:

The Checkout Field Editor for WooCommerce (Pro) plugin for WordPress is vulnerable to unauthorized deletion of arbitrary attachments due to a missing capability/ownership check in the ajax_remove_uploaded() function in versions up to, and including, 3.8.0. The handler is registered for both wp_ajax and wp_ajax_nopriv and is gated solely by the 'file_handling_nonce' nonce, which is emitted inside the public checkout page markup (data-nonce attribute) whenever a File Upload checkout field is configured. This makes it possible for unauthenticated attackers to delete arbitrary attachments (including those belonging to other users or posts) by submitting a crafted attachment_id, which can lead to loss of important media and potential denial of service.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-122041 since 11/04/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/07/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

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

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Productinfo

Type

• WordPress Plugin

Vendor

• mehigh

Name

• Checkout Field Editor Plugin

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8.0

CPE 2.3info

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CPE 2.2info

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