Enfold <= 6.0.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via wrapper_class and class Parameters

The Enfold - Responsive Multi-Purpose Theme theme for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘wrapper_class’ and 'class' parameters in all versions up to, and including, 6.0.3 due to insufficient input sanitization and output escaping. 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.