Two Vulnerabilities Patched in Facebook for WordPress Plugin

The WordFence Threat Intelligence team responsibly disclosed a vulnerability in Facebook for WordPress, formerly known as Official Facebook Pixel, a WordPress plugin installed on over 500,000 sites. This flaw made it possible for unauthenticated attackers with access to a site’s secret salts and keys to achieve remote code execution through a deserialization weakness.

In addition, on January 27, 2021, WordFence disclosed a separately identified vulnerability in Facebook for WordPress that was introduced in the rebranding of the plugin in version 3.0.0. This flaw made it possible for attackers to inject malicious JavaScript into the plugin’s settings, if an attacker could successfully trick an administrator into performing an action such as clicking a link.

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Posted in Updates.