AIKIDO-2026-811144
apache-airflow-providers-keycloak is vulnerable to Improper Authentication
98
CVE Score
Critical
Improper Authentication
TL;DR
The Keycloak auth manager's token endpoint accepts an unauthenticated client-credentials grant request without first verifying the caller is an authorized client. This lets an unauthenticated caller obtain a valid Airflow access token directly from the token endpoint. With that token, the caller can act as an authenticated Airflow user. The fix requires the client-credentials grant to be validated against configured client authorization before issuing a token.
How do I fix this?
Upgrade the apache-airflow-providers-keycloak library to the patch version.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range with the Keycloak auth manager enabled and its token endpoint reachable by untrusted clients.
Versions
0.0.1 - 0.9.0
Fixed in 0.10.0Background info
apache-airflow-providers-keycloak is vulnerable to Improper Authentication in versions 0.0.1 - 0.9.0.
Links
Other
airflow.apache.org/docs/apache-airflow-providers-keycloak/0.10.0/changelog.htmllists.apache.org/thread/5cqh5ojl3718ogb0q1dcd9vdr47z7gp3lists.apache.org/thread/j1b9ddljxphqvoc41z7gthj4zh34vmlw?users@airflow.apache.orgopenwall.com/lists/oss-security/2026/09/15/9
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