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.

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)

Published 2026-04-18 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.010 (63.6th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.003

Affected products

Apache Airflow
Apache Software Foundation Airflow — versions 0

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/apache/airflow/pull/64129 (patch, Issue Tracking)
lists.apache.org/thread/26zmhfj1t95c1hld2r14ho81nzh1bdc8 (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.