MEDIUM5.4

PYSEC-2026-2363

Apache Airflow AWS Auth Manager has Host Header Injection Leading to SAML Authentication Bypass

Quick fix

PYSEC-2026-2363 — apache-airflow-providers-amazon: upgrade to the fixed version with the command below.

pip install --upgrade 'apache-airflow-providers-amazon>=9.22.0'

Details

In AWS Auth manager, the origin of the SAML authentication has been used as provided by the client and not verified against the actual instance URL. This allowed to gain access to different instances with potentially different access controls by reusing SAML response from other instances.

You should upgrade to 9.22.0 version of provider if you use AWS Auth Manager.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/apache-airflow-providers-amazon

Introduced in: 0Fixed in: 9.22.0

Fixpip install --upgrade 'apache-airflow-providers-amazon>=9.22.0'

References

https://nvd.nist.gov/vuln/detail/CVE-2026-25604[ADVISORY]
https://github.com/apache/airflow/pull/61368[WEB]
https://github.com/apache/airflow/commit/1a86aec01d827ba8caf41b645db56663a9a61850[WEB]
https://github.com/apache/airflow[PACKAGE]
https://lists.apache.org/thread/spwwrsmwxod7fpttcd7n7zs46j839l77[WEB]
http://www.openwall.com/lists/oss-security/2026/03/09/6[WEB]
https://pypi.org/project/apache-airflow-providers-amazon[PACKAGE]
https://github.com/advisories/GHSA-rv5f-ccpm-xjj4[ADVISORY]