CVE-2026-1558 WP Recipe Maker <= 10.3.2 - Insecure Direct Object Reference to Unauthenticated Arbitrary Post Metadata Modification via 'recipeId' Parameter

The WP Recipe Maker plugin for WordPress is vulnerable to an Insecure Direct Object Reference IDOR in versions up to, and including, 10.3.2. This is due to the /wp-json/wp-recipe-maker/v1/integrations/instacart REST API endpoint's permissioncallback being set to returntrue and a lack of subsequen...