CVE Catalog

CVE-2026-8977

MediumCVSS 6.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.19%

9th percentile - higher than 9% of all known CVEs

Summary

The WP GDPR Cookie Consent plugin for WordPress up to version 1.0.0 is vulnerable to Stored Cross-Site Scripting (XSS) via the 'ninja_gdpr_ajax_actions' AJAX action. Missing capability and nonce checks in handleAjaxCalls(), combined with insufficient input sanitization and output escaping in generateCSS(), allow script injection.

Risk Assessment

An authenticated attacker with subscriber-level access or higher can inject arbitrary scripts that execute when users visit injected pages, leading to data theft or session hijacking.

Recommendation

Update the WP GDPR Cookie Consent plugin to the latest patched version. If unavailable, temporarily disable the plugin.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS