wedevs User Frontend Plugin up to 4.3.7 AJAX Action wpuf_file_del post_author access control

Summaryinfo

A vulnerability classified as critical has been found in wedevs User Frontend Plugin up to 4.3.7. Affected is the function wpuf_file_del of the component AJAX Action Handler. Performing a manipulation of the argument post_author results in access control. This vulnerability is known as CVE-2026-12406. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in wedevs User Frontend Plugin up to 4.3.7. This affects the function wpuf_file_del of the component AJAX Action Handler. The manipulation of the argument post_author with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.3.7. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to delete arbitrary media attachments whose post_author is 0, such as guest and registration-form uploads, via the wpuf_file_del AJAX action. This is exploitable by unauthenticated visitors on any site where a WPUF shortcode is rendered on a front-end page, as this causes the valid wpuf_nonce value to be localized into publicly accessible JavaScript objects (wpuf_upload and wpuf_frontend), satisfying the sole access control gate.

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-12406 since 06/16/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for 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 07/09/2026). 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• wedevs

Name

• User Frontend Plugin

Version

• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3
• 4.3.4
• 4.3.5
• 4.3.6
• 4.3.7

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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