CVE-2026-76187: Apache Airflow Keycloak provider: Any realm client's credentials mint an Airflow session JWT
Apache Airflow Keycloak provider before 0.10.0 lets any confidential client's credentials in the realm mint an Airflow session JWT.
CVE-2026-76187 affects apache-airflow-providers-keycloak before 0.10.0. The unauthenticated token endpoint accepts a client-credentials grant for any confidential client registered in the Keycloak realm, not only the client configured for Airflow. No allowlist restricts which client ids may authenticate, so credentials of an unrelated application can obtain an Airflow session JWT. Severity is rated moderate.
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