What is CVE-2026-41017?

CVE-2026-41017 is a medium-severity vulnerability in Apache Airflow, classified under Sensitive Cookie in HTTPS Session Without 'Secure' Attribute. CVSS score: 5.9/10. Published 2026-06-01.

How severe is CVE-2026-41017?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Apache Airflow

CVE-2026-41017

Apache Airflow's `JWTRefreshMiddleware` set the JWT auth cookie without the `Secure` flag, so deployments running the Airflow API server behind an HTTPS-terminating reverse proxy (e.g. nginx / Envoy / a managed load balancer that terminate…

EPSS: 0.000 (3.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apache Airflow
Apache Software Foundation Airflow — versions 3.0.0

Weakness classification (CWE)

CWE-614 — Sensitive Cookie in HTTPS Session Without 'Secure' Attribute

References

security@apache.org (Patch, 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-2026-41017?: CVE-2026-41017 is a medium-severity vulnerability in Apache Airflow, classified under Sensitive Cookie in HTTPS Session Without 'Secure' Attribute. CVSS score: 5.9/10. Published 2026-06-01.
How severe is CVE-2026-41017?: Medium severity. CVSS v3 base score is 5.9 out of 10.