CVE-2026-12406
User Frontend <= 4.3.7 - Missing Authorization to Unauthenticated Arbitrary Attachment Deletion via 'attach_id' Parameter
Description
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.
INFO
Published Date :
July 9, 2026, 8:16 a.m.
Last Modified :
July 9, 2026, 8:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-12406
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the User Frontend plugin to the latest version.
- Verify that the authorization checks are properly implemented.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-12406.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-12406 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-12406
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-12406 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-12406 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jul. 09, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'wedevs', 'product': 'User Frontend: AI Powered Frontend Posting, User Directory, Profile Builder, Membership & User Registration', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '4.3.7'}], 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-862 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.2/includes/Ajax.php#L27 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.2/includes/Ajax/Upload_Ajax.php#L257 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.2/includes/Ajax/Upload_Ajax.php#L271 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.2/includes/Frontend.php#L88 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.7/includes/Ajax.php#L27 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.7/includes/Ajax/Upload_Ajax.php#L257 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.7/includes/Ajax/Upload_Ajax.php#L271 Added Reference https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.7/includes/Frontend.php#L88 Added Reference https://plugins.trac.wordpress.org/changeset?reponame=&old=3578622%40wp-user-frontend&new=3578622%40wp-user-frontend Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/0049583a-0ad3-45e4-a29e-4b8c33d09857?source=cve