Vulnerability Description
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 terminates TLS and forwards plaintext to the API server, the default cloud-native topology) would have the user's session JWT replayed over any cleartext HTTP request to the same host. A network-positioned attacker (Wi-Fi MITM, hostile LAN, captive-portal proxy) could induce a logged-in user's browser to issue an HTTP request to the deployment's hostname and capture the JWT cookie out of that request, then replay it against the authenticated API. Affects deployments where the Airflow API server is reached through a TLS-terminating proxy and the cookie's secure-by-default protection is load-bearing for session integrity. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Airflow | >= 3.0.0, < 3.2.2 |
Related Weaknesses (CWE)
References
- https://github.com/apache/airflow/pull/65348Issue TrackingPatch
- https://lists.apache.org/thread/9jx0sk49c1250zflx0q3clc717qgjdchMailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/05/31/6Mailing ListThird Party Advisory
FAQ
What is CVE-2026-41017?
CVE-2026-41017 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 /...
How severe is CVE-2026-41017?
CVE-2026-41017 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-41017?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Airflow.