CVE-2026-1558
Received Received - Intake
IDOR Vulnerability in WP Recipe Maker Allows Metadata Overwrite

Publication date: 2026-02-27

Last updated on: 2026-02-27

Assigner: Wordfence

Description
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.
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Meta Information
Published
2026-02-27
Last Modified
2026-02-27
Generated
2026-06-16
AI Q&A
2026-02-27
EPSS Evaluated
2026-06-14
NVD
CVE-2026-1558
EUVD
EUVD-2026-8995
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
wp_recipe_maker wp_recipe_maker 10.3.3
wp_recipe_maker wp_recipe_maker to 10.3.2 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
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Executive Summary

The WP Recipe Maker plugin for WordPress has a vulnerability known as Insecure Direct Object Reference (IDOR) in versions up to and including 10.3.2. This vulnerability exists because the REST API endpoint /wp-json/wp-recipe-maker/v1/integrations/instacart has its permission callback set to always allow access (__return_true) without proper authorization or ownership checks on the user-supplied recipeId parameter.

As a result, unauthenticated attackers can exploit this flaw to overwrite arbitrary post metadata (specifically wprm_instacart_combinations) for any post ID on the affected WordPress site.

Impact Analysis

This vulnerability allows unauthenticated attackers to modify post metadata on the affected WordPress site without permission. While it does not directly impact confidentiality or availability, it can lead to integrity issues by allowing attackers to overwrite data associated with posts.

Such unauthorized modifications could disrupt the normal functioning of the site, potentially causing incorrect or malicious content to be displayed or processed.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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