Cyklodev WP Notify <= 1.2.1 is vulnerable to Auth. Stored Cross-Site Scripting (XSS) vulnerability

The Cyklodev WP Notify plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an unknown parameter in versions up to, and including, 1.3.0 due to insufficient input sanitization and output escaping. This makes it possible for administrator-level attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.