Secure Copy Content Protection and Content Locking <= 4.9.8 - Unauthenticated Stored Cross-Site Scripting via X-Forwarded-For Header

The Secure Copy Content Protection and Content Locking plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'X-Forwarded-For' HTTP header in all versions up to, and including, 4.9.8 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.