🔐 CVE Alert

CVE-2026-109214

HIGH 7.2

User Frontend <= 4.3.13 - Unauthenticated Stored Cross-Site Scripting via Taxonomy Field Text-Input

CVSS Score
7.2
EPSS Score
0.0%
EPSS Percentile
0th

The User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '<taxonomy_field_name> (default: 'category')' parameter in all versions up to, and including, 4.3.13 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the target installation to have configured a Taxonomy field in text-input mode with guest post submission enabled on at least one frontend form.

CWE CWE-79
Vendor wedevs
Product user frontend – membership, user registration, user profile, user directory & content restriction with frontend post submission
Published Nov 7, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

wedevs / User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission
0 ≤ 4.3.13

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/ca1837a4-ea04-4a82-aadb-43e9cff28833?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/admin/form-builder/views/post-form-settings.php#L498 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/admin/html/form-settings-post.php#L118 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/includes/Traits/FieldableTrait.php#L745 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/includes/Ajax/Frontend_Form_Ajax.php#L36 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/includes/Ajax.php#L26 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/admin/form-builder/assets/js/form-builder.js#L666 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?reponame=&new=3770255%40wp-user-frontend%2Ftags%2F4.3.14&old=3722911%40wp-user-frontend%2Ftags%2F4.3.13

Credits

Chakradhar Chirumamilla