WP Recipe Maker < 10.8.1 - Missing Authorization to Authenticated (Contributor+) Arbitrary Recipe Ownership Takeover and Unpublishing via '[wprm-recipe]' Shortcode

Description

The WP Recipe Maker plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 10.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to take ownership of any admin-authored recipe by rewriting its post_author to the attacker's user ID, and unpublish it by overwriting its post_status with the contributor's draft or pending post status. This requires the default 'recipe_use_author' setting to be set to 'parent' for the ownership transfer to occur, though unpublishing remains possible regardless of this setting.