CVE-2021-24217: Facebook

High severity, CVSS 8.1. EPSS: 3.5% chance of exploitation in the next 30 days.

The run_action function of the Facebook for WordPress plugin before 3.0.0 deserializes user supplied data making it possible for PHP objects to be supplied creating an Object Injection vulnerability. There was also a useable magic method in the plugin that could be used to achieve remote code execution.

Affected products

• Facebook Facebook: before 3.0.0 (fixed in 3.0.0)

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