CVE-2026-96660
highThe User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin…
The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Checkbox Field Value in all versions up to, and including, 5.2.8 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. The nopriv AJAX action user_registration_user_form_submit reaches ur_process_registration() without nonce validation, meaning any unauthenticated request can reach the vulnerable code path.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/class-ur-... security@wordfence.com
- https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/frontend/... security@wordfence.com
- https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/functions... security@wordfence.com
- https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/functions... security@wordfence.com
- https://plugins.trac.wordpress.org/changeset/3741339/user-registration/trunk/includes/fron... security@wordfence.com
- https://www.wordfence.com/threat-intel/vulnerabilities/id/690d23ee-cf70-4ecf-8cd2-21f67378... security@wordfence.com