WebRehab Super Forms Plugin up to 6.3.316 on WordPress Register/Login add-on before_email_success_msg role privileges management

Summaryinfo

A vulnerability was found in WebRehab Super Forms Plugin up to 6.3.316. It has been rated as critical. The affected element is the function before_email_success_msg of the component Register/Login add-on. The manipulation of the argument role leads to privileges management. This vulnerability is uniquely identified as CVE-2026-15989. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in WebRehab Super Forms Plugin up to 6.3.316. This issue affects the function before_email_success_msg of the component Register/Login add-on. The manipulation of the argument role with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.3.316. This is due to the Register & Login add-on's before_email_success_msg() function whitelisting the client-submitted 'role' key and copying it into the user-data array that is passed directly to wp_insert_user(), without validating the submitted role against the administrator-configured register_user_role, without an allow-list, and without any current_user_can() capability check. This makes it possible for unauthenticated attackers to register a new account with the Administrator role by injecting role=administrator into the data submitted to any published Super Forms registration form (register_login_action='register').

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-15989 since 07/16/2026. 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 are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/01/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• WebRehab

Name

• Super Forms Plugin

Version

• 6.3.316

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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