CVE-2026-12561

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "tagDiv Composer", "vendor": "tagDiv", "versions": [{"lessThanOrEqual": "5.4.5", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The tagDiv Composer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the vc_raw_html shortcode in all versions up to and including 5.4.5. This is due to insufficient input sanitization and output escaping in the vc_raw_html::render() method, which base64-decodes shortcode content (after a strip_tags() that is bypassed because the encoded payload contains no tags on save) and concatenates the result directly into the page HTML. Because WordPress's save-time wp_kses_post() filter only sees the inert base64 text inside a normal shortcode bracket and does not decode it, the dangerous tags survive into post_content and are emitted unescaped at render time. 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 (for example, when an Editor or Administrator previews the pending post)."}, {"lang": "es", "value": "El plugin tagDiv Composer para WordPress es vulnerable a cross-site scripting almacenado a trav\u00e9s del shortcode vc_raw_html en todas las versiones hasta la 5.4.5 inclusive. Esto se debe a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes en el m\u00e9todo vc_raw_html::render(), que decodifica en base64 el contenido del shortcode (despu\u00e9s de un strip_tags() que se omite porque la carga \u00fatil codificada no contiene etiquetas al guardar) y concatena el resultado directamente en el HTML de la p\u00e1gina. Debido a que el filtro wp_kses_post() de WordPress en tiempo de guardado solo ve el texto base64 inerte dentro de un corchete de shortcode normal y no lo decodifica, las etiquetas peligrosas sobreviven en post_content y se emiten sin escapar en tiempo de renderizado. Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador y superior, inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina inyectada (por ejemplo, cuyo un Editor o Administrador previsualiza la publicaci\u00f3n pendiente)."}], "id": "CVE-2026-12561", "lastModified": "2026-09-28T23:10:00.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-12561", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-25T12:05:17.442642Z", "version": "2.0.3"}}]}, "published": "2026-08-25T05:17:19.867", "references": [{"source": "security@wordfence.com", "url": "https://tagdiv.com/tagdiv-composer-page-builder-basics/"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/48ae6e52-4a66-4676-9528-6f997ef54c7a?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

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