HIGH7.2

PYSEC-2026-2345

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

Quick fix

PYSEC-2026-2345 — apache-airflow: upgrade to the fixed version with the command below.

pip install --upgrade 'apache-airflow>=3.2.2'

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/apache-airflow

Introduced in: 0Fixed in: 3.2.2

Fixpip install --upgrade 'apache-airflow>=3.2.2'

References

https://nvd.nist.gov/vuln/detail/CVE-2026-40961[ADVISORY]
https://github.com/apache/airflow/pull/65557[WEB]
https://github.com/apache/airflow[PACKAGE]
https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q[WEB]
http://www.openwall.com/lists/oss-security/2026/05/31/2[WEB]
https://pypi.org/project/apache-airflow[PACKAGE]
https://github.com/advisories/GHSA-6hcw-qqr8-pjj8[ADVISORY]