Divi Engine Divi Form Builder Plugin up to 5.1.8 User Account Management update_user/handle_register_submission User ID authorization

Summaryinfo

A vulnerability, which was classified as critical, has been found in Divi Engine Divi Form Builder Plugin up to 5.1.8. The affected element is the function update_user/handle_register_submission of the component User Account Management. This manipulation of the argument User ID causes authorization. The identification of this vulnerability is CVE-2026-5523. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Divi Engine Divi Form Builder Plugin up to 5.1.8. Affected by this vulnerability is the function update_user/handle_register_submission of the component User Account Management. The manipulation of the argument User ID with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Divi Form Builder plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 5.1.8. This is due to the update_user() function accepting a user ID parameter from form submissions without verifying that the authenticated user has permission to edit that specific user account, and the handle_register_submission() function only checking if any user is logged in rather than validating permissions for the target user. This makes it possible for authenticated attackers, with subscriber-level access and above, to change the email address and password of any user account, including administrators, resulting in complete account takeover.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-5523 since 04/04/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. 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 07/09/2026).

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

• Divi Engine

Name

• Divi Form Builder 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
• 5.1.8

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CPE 2.2info

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