Auth bypass in Apache Airflow
CVE-2026-30911
Apache Airflow versions 3.1.0 through 3.1.7 missing authorization vulnerability in the Execution API's Human-in-the-Loop (HITL) endpoints that allows any authenticated task instance to read, approve, or reject HITL workflows belonging to any other task instance. Users are recommended to upgrade to Apache Airflow 3.1.8 or later, which resolves this issue.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Apache Airflow
- Apache Software Foundation Airflow — versions 3.1.0
Weakness classification (CWE)
References
- github.com/apache/airflow/pull/62886 (Patch, patch, Issue Tracking)
- lists.apache.org/thread/1rs2v7fcko2otl6n9ytthcj87cmsgx51 (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-30911?
- CVE-2026-30911 is a high-severity vulnerability in Apache Airflow, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-03-17.
- How severe is CVE-2026-30911?
- High severity. CVSS v3 base score is 8.1 out of 10.