What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-27 · updated 2026-06-17
• Weakness: CWE-639

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.

Affected products

• brechtvds WP Recipe Maker: through 10.3.2

References

• https://plugins.trac.wordpress.org/browser/wp-recipe-maker/tags/10.3.2/includes/public/api/class-wprm-api-integrations.php#L40
• https://plugins.trac.wordpress.org/browser/wp-recipe-maker/tags/10.3.2/includes/public/class-wprm-instacart.php#L110
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3464195%40wp-recipe-maker%2Ftrunk&old=3441130%40wp-recipe-maker%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/90a5589f-f0e9-4511-9c5e-0afcee0824d5?source=cve

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