CVE-2026-109214
User Frontend <= 4.3.13 - Unauthenticated Stored Cross-Site Scripting via Taxonomy Field Text-Input
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| User Frontend – Membership, User Registration, User Profile, User Directory & Content Restriction with Frontend Post Submission wedevs |
≥ 0; ≤ 4.3.13 (affected, semver)
Other versions: unaffected |
CNA: Wordfence |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.2 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | CNA: Wordfence |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ca1837a4-ea04-4a82-aadb-43e9cff28833?source=cveCNA: Wordfence
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/admin/form-builder/views/post-form-settings.php#L498CNA: Wordfence
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/admin/html/form-settings-post.php#L118CNA: Wordfence
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/includes/Traits/FieldableTrait.php#L745CNA: Wordfence
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/includes/Ajax/Frontend_Form_Ajax.php#L36CNA: Wordfence
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/includes/Ajax.php#L26CNA: Wordfence
- https://plugins.trac.wordpress.org/browser/wp-user-frontend/tags/4.3.13/admin/form-builder/assets/js/form-builder.js#L666CNA: Wordfence
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3770255%40wp-user-frontend%2Ftags%2F4.3.14&old=3722911%40wp-user-frontend%2Ftags%2F4.3.13CNA: Wordfence
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