Input validation vulnerability in Eonet Manual User Approve 2.1.3

The Eonet Manual User Approve plugin for WordPress has a security issue that makes it vulnerable to malicious activity. This issue affects versions up to and including 2.1.3. This means that if an attacker who has administrator-level access injects malicious web scripts into pages, the scripts may execute when a user visits the page. This security issue only affects multi-site installations and installations where the feature “unfiltered_html” has been disabled.