CVE-2026-8977
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
The WP GDPR Cookie Consent plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) 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 and missing output escaping in the generateCSS() function.
Risk Assessment
Authenticated attackers with subscriber-level access and above can inject arbitrary web scripts that will execute whenever a user accesses an injected page. This poses a serious threat to user security and the integrity of the site.
Recommendation
It is recommended to update the plugin to the latest version that includes security fixes. Additionally, a code audit should be conducted to ensure proper input sanitization and output escaping.
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.