CVE-2026-12418

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.

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