Apache Airflow: Wildcard DagVersion Listing Bypasses Per‑DAG RBAC and Leaks Metadata

{
  "id": "99ca722416f80ded55022d14d2ea3de22a3995ac6dff5fc4cc2347b72266bd5f",
  "url": "https://osv.dev/vulnerability/CVE-2026-26929",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Airflow: Wildcard DagVersion Listing Bypasses Per‑DAG RBAC and Leaks Metadata",
    "summary": "Apache Airflow versions 3.0.0 through 3.1.7 FastAPI DagVersion listing API does not apply per-DAG authorization filtering when the request is made with dag_id set to \"~\" (wildcard for all DAGs). As a result, version metadata of DAGs that the requester is not authorized to access is returned. Users are recommended to upgrade to Apache Airflow 3.1.8 or later, which resolves this issue.",
    "evidence": "osv:CVE-2026-26929",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-26929",
      "aliases": [
        "BIT-airflow-2026-26929",
        "CVE-2026-26929",
        "GHSA-4m3h-wp5w-5hqh",
        "PYSEC-2026-14"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/airflow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1fc3442f1307fdf5e1221b26f41266c4fed330d3"
                },
                {
                  "fixed": "27f9660ab259e27157e6814310e9e4dc19e8be08"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.1.8"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.1.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26929.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.886966443Z",
      "provider": "osv",
      "references": [
        "https://pypi.python.org",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26929.json",
        "https://lists.apache.org/thread/g5o6khx83jwqvdyn0mlyb0krt35cs9ss",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-26929",
        "https://github.com/apache/airflow/pull/61675"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-732"
        ],
        "cna_assigner": "apache",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26929.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-26929",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492428,
  "published_at": "2026-03-17T10:54:05.523+00:00"
}