RD Station <= 5.3.2 - Authenticated (Contributor+) Stored Cross-Site Scripting

The RD Station plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 5.3.2 due to insufficient input sanitization and output escaping of post metaboxes added by the plugin. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.