Missing Authorization Affecting apache-airflow-core package, versions [3.0.0rc1,3.2.0rc1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published9 Apr 2026
- disclosed9 Apr 2026
- creditselen
Introduced: 9 Apr 2026
CVE-2026-34538 (opens in a new tab)How to fix?
Upgrade apache-airflow-core to version 3.2.0rc1 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization through the wait_dag_run_until_finished handler in airflow-core/src/airflow/api_fastapi/core_api/routes/public/dag_run.py. An attacker can read task result values by sending a GET request to the DAG run wait endpoint with the result query parameter while holding only DAG run read access, such as the Viewer role. This exposes XCom payloads that are intended to remain protected, allowing sensitive execution results to be returned to users who should only be able to inspect DAG and run state.