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CVE-2026-49818

Estado: AnalizadaMedia (6.5)—

The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`.

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).

Tecnologías afectadas (1)

Apache — Apache-airflow-providers-samba

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-49818",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49818",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-09T15:27:01.612337Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Airflow Samba provider",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "4.12.6",
              "versionType": "semver"
            }
          ],
          "packageName": "apache-airflow-providers-samba",
          "collectionURL": "https://pypi.python.org",
          "defaultStatus": "unaffected"
        }
      ]
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  ],
  "published": "2026-06-09T09:16:30.443",
  "references": [
    {
      "url": "https://github.com/apache/airflow/pull/67857",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "https://lists.apache.org/thread/3vs0m3p51psgf54tts18d6336g24x3sf",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "source": "security@apache.org"
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      "url": "http://www.openwall.com/lists/oss-security/2026/06/09/8",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@apache.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Apache Airflow Samba provider's `GCSToSambaOperator` joined GCS object names to the SMB destination path without a containment check, so an object named with `../` segments resolved a write path outside the configured `destination_path`. An attacker able to write objects into the source GCS bucket — typically an external data producer distinct from the trusted DAG author — could write files to arbitrary locations on the Samba target when the operator ran. Upgrade apache-airflow-providers-samba to 4.12.6 or later, which validates the resolved destination stays within `destination_path`."
    },
    {
      "lang": "es",
      "value": "El 'GCSToSambaOperator' del proveedor Samba de Apache Airflow unía nombres de objetos de GCS a la ruta de destino SMB sin una verificación de contención, por lo que un objeto nombrado con segmentos '../' resolvía una ruta de escritura fuera de la 'destination_path' configurada. Un atacante capaz de escribir objetos en el bucket GCS de origen - típicamente un productor de datos externo distinto del autor de DAG de confianza - podría escribir archivos en ubicaciones arbitrarias en el destino Samba cuando el operador se ejecutaba. Actualice apache-airflow-providers-samba a la versión 4.12.6 o posterior, que valida que el destino resuelto permanezca dentro de 'destination_path'."
    }
  ],
  "lastModified": "2026-07-23T08:10:00.137",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:apache-airflow-providers-samba:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "10B0DB0C-B5E5-4C4D-B5BE-DC13D7CE22C0",
              "versionEndExcluding": "4.12.6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@apache.org"
}