CVE-2026-19699
Received Received - Intake

Insecure REST API Access in GutenKit WordPress Plugin

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: WPScan

Description
The GutenKit WordPress plugin before 2.5.0 does not have a sufficient capability check on some of its REST API endpoints, allowing users with the Contributor role and above to retrieve mailing-list audience metadata from the site's connected marketing account.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-19699
EUVD
EUVD-2026-63205

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
gutenkit gutenkit to 2.5.0 (exc)
gutenkit gutenkit From 2.4.12 (inc) to 2.4.15 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

The GutenKit WordPress plugin before version 2.5.0 has a vulnerability where users with the Contributor role or higher can access Mailchimp audience metadata from the site's connected marketing account. This happens because some REST API endpoints lack proper capability checks, allowing unauthorized access to sensitive data.

Detection Guidance

Check the installed version of the GutenKit plugin. If it is between 2.4.12 and 2.4.15, the system is vulnerable. Use WordPress admin panel or run a command like 'wp plugin list' if using WP-CLI to verify the version.

Impact Analysis

This vulnerability allows users with basic WordPress roles to retrieve mailing-list audience metadata from connected marketing accounts. This could expose subscriber lists, email addresses, and other marketing data to unauthorized individuals, potentially leading to privacy breaches or misuse of data.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR and other privacy regulations by exposing personal data without proper authorization. Organizations may face legal penalties, reputational damage, and loss of customer trust if such data breaches occur due to insufficient access controls.

Mitigation Strategies

Update the GutenKit plugin to version 2.5.0 or later immediately. Remove or restrict Contributor roles if they are not necessary to limit exposure.

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