CVE-2026-12955: Auth Bypass (CVSS 4.3)

Description

The GDPR Cookie Consent plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check and missing nonce verification on the gdpr_cookie_consent_ajax_save_schedule_scan() function (the wp_ajax_gcc_save_schedule_scan AJAX action) in versions up to, and including, 4.3.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the plugin's cookie scan schedule configuration stored in the gdpr_scan_schedule_data option, which is an administrative function intended to be limited to users with the manage_options capability.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.10%

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://plugins.trac.wordpress.org/browser/gdpr-cookie-consent/tags/4.3.5/admin/class-gdpr-cookie-consent-admin.php#L8132 https://plugins.trac.wordpress.org/browser/gdpr-cookie-consent/tags/4.3.5/admin/class-gdpr-cookie-consent-admin.php#L8139 https://plugins.trac.wordpress.org/browser/gdpr-cookie-consent/tags/4.3.5/includes/class-gdpr-cookie-consent.php#L251 https://plugins.trac.wordpress.org/changeset/3601475/gdpr-cookie-consent/tags/4.3.7/admin/class-gdpr-cookie-consent-admin.php https://www.wordfence.com/threat-intel/vulnerabilities/id/ddee10e0-093c-47a3-8aa9-946d6d21e1b2?source=cve

Frequently Asked Questions

What is CVE-2026-12955? +

The GDPR Cookie Consent plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check and missing nonce verification on the gdpr_cookie_consent_ajax_save_schedule_scan() function (the wp_ajax_gcc_save_schedule_scan AJAX action) in versions up to, and including, 4.3.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the plugin's cookie scan schedule configuration stored in the gdpr_scan_schedule_data option, which is an administrative function intended to be limited to users with the manage_options capability. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-12955? +

CVE-2026-12955 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-12955? +

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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