RCE in Apache Airflow
CVE-2026-30898
An example of BashOperator in Airflow documentation suggested a way of passing dag_run.conf in the way that could cause unsanitized user input to be used to escalate privileges of UI user to allow execute code on worker. Users should review if any of their own DAGs have adopted this incorrect advice.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.008 (53.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Airflow
- Apache Software Foundation Airflow — versions 0
Weakness classification (CWE)
References
- security@apache.org (patch, Issue Tracking)
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-30898?
- CVE-2026-30898 is a high-severity vulnerability in Apache Airflow, classified under Command Injection. CVSS score: 8.8/10. Published 2026-04-18.
- How severe is CVE-2026-30898?
- High severity. CVSS v3 base score is 8.8 out of 10.