What’s Vulnerable › Vulnerabilities

CVE-2021-24218: Facebook for WordPress 3.0.0-3.0.3 - CSRF to Stored XSS and Settings Deletion

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-12 · updated 2026-06-17
• Weakness: CWE-352

Description

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 for WordPress: from 3.0.0 before 3.0.4 — fixed in 3.0.4

How to fix

Upgrade to a fixed version: Facebook for WordPress 3.0.4. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/169d21fc-d191-46ff-82e8-9ac887aed8a4
• https://www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin/
• https://wpscan.com/vulnerability/169d21fc-d191-46ff-82e8-9ac887aed8a4
• https://www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin/

Get alerted when CVE-2021-24218 or the next vulnerability affects your stack