Input validation vulnerability in Evergreen Content Poster – Auto Post and Schedule Your Best Content to Social Media 1.3.6.1

The Evergreen Content Poster plugin for WordPress is vulnerable to a security issue called Stored Cross-Site Scripting, which affects all versions up to, and including, 1.3.6.1. This security issue can be exploited by authenticated attackers with administrator-level permissions and above. It makes it possible for them to inject malicious web scripts into pages which will then execute when other users visit these pages. This security issue only affects WordPress multi-site installations and installations where the unfiltered_html option has been disabled.