CVE-2026-71428

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{"affected": [{"affectedData": [{"product": "unstructured", "vendor": "Unstructured-IO", "versions": [{"status": "affected", "version": ">= 0.4.7, < 0.24.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The unstructured library provides open-source components for ingesting and pre-processing images and text documents, such as PDFs, HTML, Word docs, and many more. From 0.4.7 until 0.24.0, the url argument of partition, partition_html, and partition_md is fetched without host validation in unstructured/partition/auto.py, unstructured/partition/html/partition.py, and unstructured/partition/md.py. An attacker who controls that URL can make a server-side ingestion service request loopback addresses, internal HTTP services, or cloud metadata endpoints through direct targets, redirects, or DNS rebinding. The response body is returned as Element text, allowing internal response disclosure, and side-effecting GET endpoints may also be triggered. This issue is fixed in version 0.24.0."}, {"lang": "es", "value": "La biblioteca unstructured proporciona componentes de c\u00f3digo abierto para la ingesta y el preprocesamiento de im\u00e1genes y documentos de texto, como PDFs, HTTP, documentos de Word y muchos m\u00e1s. Desde la versi\u00f3n 0.4.7 hasta la 0.24.0, el argumento url de partition, partition_html y partition_md se obtiene sin validaci\u00f3n de host en unstructured/partition/auto.py, unstructured/partition/html/partition.py y unstructured/partition/md.py. Un atacante que controla esa URL puede hacer que un servicio de ingesta del lado del servidor solicite direcciones de bucle invertido, servicios HTTP internos o puntos finales de metadatos en la nube a trav\u00e9s de objetivos directos, redirecciones o reencuadernaci\u00f3n de DNS. El cuerpo de la respuesta se devuelve como texto de Elemento, lo que permite la divulgaci\u00f3n de respuestas internas, y tambi\u00e9n se pueden activar puntos finales GET con efectos secundarios. Este problema se corrige en la versi\u00f3n 0.24.0."}], "id": "CVE-2026-71428", "lastModified": "2026-10-18T20:10:00.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71428", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-25T15:05:06.666433Z", "version": "2.0.3"}}]}, "published": "2026-08-20T17:19:40.773", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/Unstructured-IO/unstructured/commit/445c95735c4045057f51f399bc04c657751923bd"}, {"source": "security-advisories@github.com", "url": "https://github.com/Unstructured-IO/unstructured/pull/4388"}, {"source": "security-advisories@github.com", "url": "https://github.com/Unstructured-IO/unstructured/releases/tag/0.24.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/Unstructured-IO/unstructured/security/advisories/GHSA-4mvj-m6j5-pmf7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}, {"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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