wedevs User Frontend Plugin up to 4.3.7 Post Submission wpuf_submit_post wpuf_files_data resource injection

Summaryinfo

A vulnerability was found in wedevs User Frontend Plugin up to 4.3.7. It has been rated as critical. This issue affects the function wpuf_submit_post of the component Post Submission Handler. Performing a manipulation of the argument wpuf_files_data results in resource injection. This vulnerability is cataloged as CVE-2026-12418. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in wedevs User Frontend Plugin up to 4.3.7. This affects the function wpuf_submit_post of the component Post Submission Handler. The manipulation of the argument wpuf_files_data with an unknown input leads to a resource injection vulnerability. CWE is classifying the issue as CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. 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 Insecure Direct Object Reference in all versions up to, and including, 4.3.7 via the 'wpuf_files_data' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to overwrite the post_title, post_content, and post_excerpt of any arbitrary post on the site, including posts authored by administrators. Exploitation requires access to any WPUF post submission form; this is achievable by users with no WordPress role, as the wpuf_submit_post AJAX action is gated only by a nonce with no capability check for the downstream post-edit operation.

It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-12418 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 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

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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