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CVE-2026-40961 A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the…

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 and versions

Product Affected versions Fixed in
Apache Airflow 3.0 3.0.0 → < 3.2.2 3.2.2

References

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