Description
WordPress Plugin Facebook for WordPress is prone to a cross-site request forgery vulnerability. Exploiting this issue may allow a remote attacker to perform certain administrative actions and gain unauthorized access to the affected application; other attacks are also possible. WordPress Plugin Facebook for WordPress versions starting from 3.0.0 and up to (and including) 3.0.3 are vulnerable.
Remediation
Update to plugin version 3.0.4 or latest
References
https://www.wordfence.com/blog/2021/03/two-vulnerabilities-patched-in-facebook-for-wordpress-plugin/
https://plugins.svn.wordpress.org/official-facebook-pixel/trunk/readme.txt