What the vulnerability does
01Description
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 permission_callback being set to __return_true and a lack of subsequent authorization or ownership checks on the user-supplied recipeId. This makes it possible for unauthenticated attackers to overwrite arbitrary post metadata (wprm_instacart_combinations) for any post ID on the site via the recipeId parameter.
Explanation of Vulnerability in Simple Terms
02Summary
WP Recipe Maker versions up to 10.3.2 contain an integrity vulnerability that allows unauthenticated attackers to modify data over the network without user interaction. The vulnerability has a CVSS score of 5.3 (medium severity). No confidentiality or availability impact is present. Site administrators should update to a version newer than 10.3.2.
What an attacker can do
03Attacker Capabilities
Modify data on the site without authentication or user interaction.
Potential impact on your site
04Site Impact
Attackers can alter recipe data or other plugin content without logging in.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user action required.
Key dates
06Disclosure timeline
February 27, 2026
CVE published
April 8, 2026
Record updated
