AIKIDO-2026-297701
apache-airflow-providers-fab is vulnerable to Origin Validation Error
81
High Risk
This Affects:
apache-airflow-providers-fabTL;DR
The Authentik OAuth path in the FAB auth manager does not validate the origin of the OAuth response it receives before completing sign-in. A response redirected from an unintended origin can still be accepted and completed as a valid login. This lets sign-in proceed using an OAuth response Airflow should not have trusted. The fix validates the OAuth response's origin against the configured Authentik provider before completing sign-in.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and run Authentik configured as an OAuth login provider for the FAB auth manager.
Background info
apache-airflow-providers-fab is vulnerable to Origin Validation Error in versions 0.0.1 - 3.8.1.
How to fix this
Upgrade the apache-airflow-providers-fab library to the patch version.
Links
Other
airflow.apache.org/docs/apache-airflow-providers-fab/3.9.0/changelog.htmllists.apache.org/thread/qh7fobs16p2hgln2yblbgf8ty4dvf4y7lists.apache.org/thread/qh7fobs16p2hgln2yblbgf8ty4dvf4y7?users@airflow.apache.org
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