CVE-2025-9891: CYBERLORD92 User Sync

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The User Sync – Remote User Sync plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.2. This is due to missing or incorrect nonce validation on the mo_user_sync_form_handler() function. This makes it possible for unauthenticated attackers to deactivate the plugin via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• CYBERLORD92 User Sync: up to and including 1.0.2

Published 2025-09-17. Last modified 2026-09-26.