CVE-2026-26929: Apache Airflow: Wildcard DagVersion Listing Bypasses Per‑DAG RBAC and Leaks Metadata

March 17, 2026 (updated June 5, 2026)

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.

References

github.com/advisories/GHSA-4m3h-wp5w-5hqh
github.com/apache/airflow/pull/61675
github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-14.yaml
lists.apache.org/thread/g5o6khx83jwqvdyn0mlyb0krt35cs9ss
nvd.nist.gov/vuln/detail/CVE-2026-26929

Code Behaviors & Features

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