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CVE-2026-6404

4.4 · MEDIUM

The Anomify AI – Anomaly Detection and Alerting plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'anomify_api_key' parameter in versions up to and including 0.3.6.

Published May 20, 2026CWE-79EPSS 0.33%

Overview

CVE-2026-6404 is a medium-severity vulnerability. It was published on May 20, 2026 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The Anomify AI – Anomaly Detection and Alerting plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'anomify_api_key' parameter in versions up to and including 0.3.6. This is due to insufficient input sanitization and missing output escaping: the plugin applies sanitize_text_field() to the Metric Data Key input before saving it via update_option(), but sanitize_text_field() strips HTML tags without encoding double-quote characters, and the value is then echoed directly into an HTML attribute context (value="...") without esc_attr(). This makes it possible for authenticated attackers with administrator-level access to inject arbitrary web scripts that execute whenever a user visits the plugin's settings page.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/anomify/tags/0.3.6/Anomify/Config.php#L152Refplugins.trac.wordpress.org/browser/anomify/tags/0.3.6/Anomify/Wp/Admin.php#L32Refplugins.trac.wordpress.org/browser/anomify/tags/0.3.6/Anomify/Wp/includes/admin_options.php#L43Refplugins.trac.wordpress.org/browser/anomify/trunk/Anomify/Config.php#L152Refplugins.trac.wordpress.org/browser/anomify/trunk/Anomify/Wp/Admin.php#L32Refplugins.trac.wordpress.org/browser/anomify/trunk/Anomify/Wp/includes/admin_options.php#L43Refwww.wordfence.com/threat-intel/vulnerabilities/id/4036057c-0c43-4d9c-97db-4861d91a4daa?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-6404?

CVE-2026-6404 is a medium-severity vulnerability. It was published on May 20, 2026 and has a CVSS 3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2026-6404?

This vulnerability has a CVSS 3.1 base score of 4.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-6404?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-6404?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-6404 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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