Post Carousel 4.0.0 - 4.0.7 - Unauthenticated Password-Protected Post Content and post_password Disclosure via sp_handle_post_id

The Smart Post WordPress plugin before 4.0.8 does not check whether a post is password protected before returning its content and its stored password through an unauthenticated AJAX action, allowing unauthenticated users to read protected post content and the password that guards it.