Page and Post Clone <= 6.0 - Insecure Direct Object Reference to Authenticated (Author+) Sensitive Information Exposure

The Page and Post Clone plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 6.0 via the 'content_clone' function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Author-level access and above, to clone and read private posts.