CVE-2026-4019: Auth Bypass (CVSS 5.3)

Description

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 This makes it possible for unauthenticated attackers to read the consent area block content from private, draft, or unpublished posts.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0005

Probability of exploitation

0.14%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://github.com/complianz/complianz-gdpr/blob/64c09657bd028f62d7b50a54d83ca19b87df2cef/rest-api/rest-api.php#L61 https://plugins.trac.wordpress.org/browser/complianz-gdpr/tags/7.4.4.2/rest-api/rest-api.php#L54 https://plugins.trac.wordpress.org/browser/complianz-gdpr/tags/7.4.4.2/rest-api/rest-api.php#L61 https://plugins.trac.wordpress.org/changeset/3508713/complianz-gdpr/trunk/rest-api/rest-api.php https://plugins.trac.wordpress.org/changeset?old_path=%2Fcomplianz-gdpr/tags/7.4.5&new_path=%2Fcomplianz-gdpr/tags/7.4.6 https://www.wordfence.com/threat-intel/vulnerabilities/id/3892489e-6ff7-4664-bb06-b8edff6dd659?source=cve

Frequently Asked Questions

What is CVE-2026-4019? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-4019? +

CVE-2026-4019 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0005, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-4019? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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