WP SMTP <= 2.1.5 is vulnerable to Unauthenticated Stored Cross-Site Scripting via Email vulnerability

The Solid Mail – SMTP email and logging made by SolidWP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email Name, Subject, and Body in all versions up to, and including, 2.1.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.