The WP GDPR Cookie Consent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'ninja_gdpr_ajax_actions' AJAX action in versions up to, and including, 1.0.0. This is due to missing capability and nonce checks on the handleAjaxCalls() function, combined with insufficient input sanitization on the gdprConfig values and missing output escaping in the generateCSS() function which echoes stored configuration values directly into a <style> block rendered on wp_head. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
History

Tue, 09 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Description The WP GDPR Cookie Consent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'ninja_gdpr_ajax_actions' AJAX action in versions up to, and including, 1.0.0. This is due to missing capability and nonce checks on the handleAjaxCalls() function, combined with insufficient input sanitization on the gdprConfig values and missing output escaping in the generateCSS() function which echoes stored configuration values directly into a <style> block rendered on wp_head. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Title WP GDPR Cookie Consent <= 1.0.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'ninja_gdpr_ajax_actions' AJAX Action
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-06-09T03:41:21.669Z

Reserved: 2026-05-19T13:04:46.100Z

Link: CVE-2026-8977

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-09T05:16:41.087

Modified: 2026-06-09T05:16:41.087

Link: CVE-2026-8977

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T05:45:26Z