CVE-2026-71291

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "core", "programFiles": ["src/Entity/Field.php", "config/bolt/contenttypes.yaml"], "vendor": "bolt", "versions": [{"lessThanOrEqual": "6.1", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allow_twig flag and a regex checking for , , or ; when true, the raw field value is compiled and rendered via with no sandboxing."}, {"lang": "es", "value": "Bolt CMS renderiza los valores de los campos de contenido a trav\u00e9s del entorno completo a nivel de aplicaci\u00f3n de Twig sin ninguna SandboxExtension registrada en ninguna parte del c\u00f3digo base. En src/Entity/Field.php, getTwigValue() llama a shouldBeRenderedAsTwig(), que restringe la renderizaci\u00f3n solo al indicador allow_twig de la definici\u00f3n del campo y a una expresi\u00f3n regular que verifica \u2019{{\u2019, \u2019{%\u2019 o \u2019{#\u2019; cuando es verdadero, el valor del campo en bruto se compila y renderiza a trav\u00e9s de \u2019self::getTwig() -> createTemplate($value) -> render([\u2019record\u2019 => $this -> getContent()])\u2019 sin sandboxing. El propio paquete de Bolt config/bolt/contenttypes.yaml establece \u2019allow_twig: true\u2019 en el campo de contenido del tipo de contenido predeterminado \u2019pages\u2019 de forma predeterminada. Cualquier usuario con acceso de edici\u00f3n a ese tipo de contenido (un rol de editor est\u00e1ndar, no solo un administrador) puede inyectar una carga \u00fatil de Twig como \u2019{{ [\u2019id\u2019]|map(\u2019passthru\u2019)|join }}\u2019 que ejecuta comandos arbitrarios del sistema operativo cuando el contenido se guarda y se renderiza, logrando ejecuci\u00f3n remota de c\u00f3digo como el usuario del servidor web."}], "id": "CVE-2026-71291", "lastModified": "2026-10-23T21:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71291", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-05T15:46:43.858659Z", "version": "2.0.3"}}]}, "published": "2026-08-05T13:24:53.820", "references": [{"source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "url": "https://github.com/bolt/core"}, {"source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "url": "https://github.com/bolt/core/blob/6.1/src/Entity/Field.php"}], "sourceIdentifier": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1336"}], "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,6.1]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "core", "source": "cna", "vendor": "bolt"}, "product": "core", "vendor": "bolt"}], "created": "2026-08-05T15:15:05.782599+00:00", "updated": "2026-08-10T21:00:04.271792+00:00", "vendors": ["bolt", "bolt$PRODUCT$core"]}