The plugin allows passing shortcode attributes with post_type & post_status which can be used to retrieve arbitrary content. This way, users with a role as low as Contributor can gain access to content they are not supposed to.
[include-page allowtype="post" allowstatus="draft" id="131"]
[include-page allowtype="post" allowstatus="private" id="132"]
[include-page allowtype="custon-post-type" allowstatus="any" id="{ID}"]