Content Protector (Passster) < 4.3.6 - Unauthenticated Non-Public Post Content Disclosure via Captcha REST Endpoint

The Passster WordPress plugin before 4.3.6 does not perform a post-status check before returning post content from an unauthenticated REST endpoint, allowing unauthenticated users to disclose the content of non-public (draft, private, and pending) posts on sites that have a captcha provider configured.