CVE-2021-24218: Facebook

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

The wp_ajax_save_fbe_settings and wp_ajax_delete_fbe_settings AJAX actions of the Facebook for WordPress plugin before 3.0.4 were vulnerable to CSRF due to a lack of nonce protection. The settings in the saveFbeSettings function had no sanitization allowing for script tags to be saved.

Affected products

• Facebook Facebook: from 3.0.0, before 3.0.4 (fixed in 3.0.4)

Published 2021-04-12. Last modified 2026-06-17.