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GHSA-6hcw-qqr8-pjj8

Apache Airflow: Authenticated users can bypass the `is_safe_url` check

Source: GitHub Advisory Database (reviewed) High CVE-2026-40961

Packages

EcosystemPackageAffectedFixed in
PyPI apache-airflow >= 3.0.0b3, < 3.2.2 3.2.2

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.