Update the WordPress Email Tracker plugin to the latest available version (at least 5.3.6).
An unknown person discovered and reported this Sensitive Data Exposure vulnerability in WordPress Email Tracker Plugin. This vulnerability has been fixed in version 5.3.6.
Toggle The Debug Mode via CrossSite Request Forgery (CSRF) vulnerability
CrossSite Request Forgery (CSRF) vulnerabilities leading to single or bulk email entries deletion
Reflected CrossSite Scripting (XSS) vulnerability