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CVE-2026-41486

Estado: AnalizadaAlta (8.9)—

Ray is an AI compute engine. From version 2.54.0 to before version 2.55.0, Ray Data registers custom Arrow extension types (ray.data.arrow_tensor, ray.data.arrow_tensor_v2, ray.data.arrow_variable_shaped_tensor) globally in PyArrow. When PyArrow reads a Parquet file containing one of these extension types, it calls __arrow_ext_deserialize__ on the field's metadata bytes. Ray's implementation passes these bytes directly to cloudpickle.loads(), achieving arbitrary code execution during schema parsing, before any row data is read. This issue has been patched in version 2.55.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Explotación que requiere interacción del usuario (UI:A) al abrir archivo Parquet manipulado. Ejecución arbitraria de código Python vía cloudpickle.loads() en deserialización durante parseo de esquema.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

Anyscale — RAY

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-41486",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
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              "automatable": "yes"
            },
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-05-12T02:07:47.053848Z"
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    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
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          "Safety": "NOT_DEFINED",
          "version": "4.0",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2026-05-08T22:16:29.903",
  "references": [
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      "url": "https://github.com/ray-project/ray/commit/c02bd31ae31996805868baa446a131a8d304525f",
      "tags": [
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      "url": "https://github.com/ray-project/ray/pull/62056",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
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    {
      "url": "https://github.com/ray-project/ray/releases/tag/ray-2.55.0",
      "tags": [
        "Product",
        "Release Notes"
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/ray-project/ray/security/advisories/GHSA-mw35-8rx3-xf9r",
      "tags": [
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      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
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      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        },
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Ray is an AI compute engine. From version 2.54.0 to before version 2.55.0, Ray Data registers custom Arrow extension types (ray.data.arrow_tensor, ray.data.arrow_tensor_v2, ray.data.arrow_variable_shaped_tensor) globally in PyArrow. When PyArrow reads a Parquet file containing one of these extension types, it calls __arrow_ext_deserialize__ on the field's metadata bytes. Ray's implementation passes these bytes directly to cloudpickle.loads(), achieving arbitrary code execution during schema parsing, before any row data is read. This issue has been patched in version 2.55.0."
    }
  ],
  "lastModified": "2026-06-17T10:46:46.953",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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          "operator": "OR"
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}