The Royal MCP WordPress plugin before 1.5.10 does not perform an object-level permission check before duplicating a requested page, relying on a generic capability, which allows users with contributor-level access to read the full content of any private or draft page and to publish it without holding the publish capability.
https://wpscan.com/vulnerability/ffdf84e4-dce3-4768-91c9-138256c3064c/