{
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          "dateUpdated": "2026-11-09T10:13:19.317Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/11/09/9"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.python.org",
          "defaultStatus": "unaffected",
          "packageName": "apache-airflow-core",
          "packageURL": "pkg:pypi/apache-airflow-core",
          "product": "Apache Airflow",
          "vendor": "Apache Software Foundation",
          "versions": [
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              "lessThan": "3.4.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "tool",
          "value": "Claude Security Scans"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Jarek Potiuk"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Apache Airflow\u0027s scheduler fully deserializes XCom values written by task code while evaluating task dependencies. A Dag author, who controls what a task writes to XCom, therefore controls data that is deserialized inside the scheduler process - a context the Airflow security model reserves for code installed by the Deployment Manager, above the worker-scoped execution capability a Dag author is documented to have. Deployments that treat Dag authors as less trusted than Deployment Managers are affected, and the scheduler must be evaluating a task dependency that reads a task-written XCom value. Users of apache-airflow are recommended to upgrade to version 3.4.0 or later, which restricts dependency evaluation to primitive XCom values."
            }
          ],
          "value": "Apache Airflow\u0027s scheduler fully deserializes XCom values written by task code while evaluating task dependencies. A Dag author, who controls what a task writes to XCom, therefore controls data that is deserialized inside the scheduler process - a context the Airflow security model reserves for code installed by the Deployment Manager, above the worker-scoped execution capability a Dag author is documented to have. Deployments that treat Dag authors as less trusted than Deployment Managers are affected, and the scheduler must be evaluating a task dependency that reads a task-written XCom value. Users of apache-airflow are recommended to upgrade to version 3.4.0 or later, which restricts dependency evaluation to primitive XCom values."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "important"
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          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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          ]
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      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-502",
              "description": "CWE-502: Deserialization of Untrusted Data",
              "lang": "en",
              "type": "CWE"
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          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-09T09:52:44.345Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/apache/airflow/pull/72718"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread.html/2qbt7qnclrlxtg3f1b685533r3mvk9hv"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Apache Airflow: Deserialization of task-controlled XCom values in the Scheduler during dependency evaluation",
      "x_generator": {
        "engine": "airflow-s/generate_cve_json.py"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-86829",
    "datePublished": "2026-11-09T09:52:44.345Z",
    "dateReserved": "2026-09-08T14:27:44.182Z",
    "dateUpdated": "2026-11-09T10:13:19.317Z",
    "state": "PUBLISHED"
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}