Astra <= 4.6.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Display Name

The Astra theme for WordPress is vulnerable to Stored Cross-Site Scripting via a user's display name in all versions up to, and including, 4.6.8 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.