CVE-2026-25604: Apache Airflow AWS Auth Manager has Host Header Injection Leading to SAML Authentication Bypass

March 9, 2026 (updated March 10, 2026)

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.

References

github.com/advisories/GHSA-rv5f-ccpm-xjj4
github.com/apache/airflow
github.com/apache/airflow/commit/1a86aec01d827ba8caf41b645db56663a9a61850
github.com/apache/airflow/pull/61368
lists.apache.org/thread/spwwrsmwxod7fpttcd7n7zs46j839l77
nvd.nist.gov/vuln/detail/CVE-2026-25604

Code Behaviors & Features

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