Complianz Plugin up to 7.4.5 on WordPress REST API Endpoint cmplz_rest_consented_content authorization

Summaryinfo

A vulnerability classified as problematic was found in Complianz Plugin up to 7.4.5 on WordPress. Affected by this issue is the function cmplz_rest_consented_content of the component REST API Endpoint. The manipulation results in authorization. This vulnerability was named CVE-2026-4019. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Complianz Plugin up to 7.4.5 on WordPress. Affected is the function cmplz_rest_consented_content of the component REST API Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality. CVE summarizes:

The Complianz – GDPR/CCPA Cookie Consent plugin for WordPress is vulnerable to unauthorized data access in all versions up to, and including, 7.4.5 This is due to the REST API endpoint at /wp-json/complianz/v1/consent-area/{post_id}/{block_id} using __return_true as the permission_callback, allowing any unauthenticated user to access it. The cmplz_rest_consented_content() function retrieves a post by ID via get_post() and returns the consentedContent attribute of any complianz/consent-area block found in it, without checking if the post is published or if the user has permission to read it. This makes it possible for unauthenticated attackers to read the consent area block content from private, draft, or unpublished posts.

The weakness was presented by Wesley Van De Kamp. The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-4019 since 03/11/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

Upgrading to version 7.4.4.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26200). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Complianz Plugin

Version

• 7.4.0
• 7.4.1
• 7.4.2
• 7.4.3
• 7.4.4
• 7.4.5

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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