{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "3.3.0"
              },
              {
                "fixed": "3.3.1"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "3.3.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "beedefac4f83459f9ce50937bd36c845a8a6b632"
            },
            {
              "fixed": "acffa62713874bc64db3f6447840cf171114476f"
            }
          ],
          "repo": "https://github.com/apache/airflow",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "cwe_ids": [
      "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67260.json"
  },
  "details": "Apache Airflow 3.3.0 moved human-in-the-loop tasks from the triggerer to a new `awaiting_input` task state swept by the scheduler. That sweep deserializes the task instance's `next_kwargs` without an allow-list, so a Dag author — who controls that value through the task execution API — can cause an arbitrary module import and object instantiation inside the scheduler process, or terminate the scheduler job. No non-default configuration is required: the sweep runs unconditionally every 15 seconds, and the default `allowed_deserialization_classes` setting does not cover this code path. Versions before 3.3.0 are not affected, because human-in-the-loop tasks deferred onto the triggerer instead. This is a different code path from CVE-2026-58076, which covers the same unguarded exception-node deserialization reached elsewhere — deployments that applied that fix must upgrade for this issue as well. Users are advised to upgrade to apache-airflow 3.3.1 or later.",
  "id": "CVE-2026-67260",
  "modified": "2026-08-14T03:51:38.744730841Z",
  "published": "2026-08-12T15:33:02.858Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://pypi.python.org"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-58076"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67260.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/vygr0fh82cjzjp5k4vtfmboxryvm3lyn"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67260"
    },
    {
      "type": "FIX",
      "url": "https://github.com/apache/airflow/pull/70685"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Airflow: DAG-author remote code execution on the Scheduler via awaiting_input next_kwargs deserialization"
}