Description
A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the `is_safe_url` check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to `apache-airflow` 3.2.2 or later. As a defense-in-depth mitigation, deployment operators can place Airflow behind a reverse proxy that strips off-domain `next=` query parameters before they reach the login endpoint.
Affected products
apache: airflow
References3
- lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q Mailing ListVendor Advisory
- github.com/apache/airflow/pull/65557 Issue TrackingPatch
- www.openwall.com/lists/oss-security/2026/05/31/2 Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.2
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 1% percentile: 52 · as of 15 November 2026
- CWE
- CWE-601
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.