Input validation vulnerability in KP Fastest Tawk.to Chat 1.1.1

The KP Fastest Tawk.to Chat plugin for WordPress has a security vulnerability that affects all versions up to, and including, 1.1.1. This vulnerability makes it possible for someone with administrator-level permissions to inject malicious web scripts into pages. These scripts will then execute whenever someone visits the page. This only affects WordPress installations that are part of a multi-site network, or have disabled the ‘unfiltered_html’ feature.