Vulnerability in Apache Software Foundation Apache Airflow Providers Keycloak

[ Description ]Official description

The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OAuth 2.0 `state` parameter on the login / login-callback flow, and did not use PKCE. An attacker with a Keycloak account in the same realm could deliver a crafted callback URL to a victim's browser and cause the victim to be logged into the attacker's Airflow session (login-CSRF / session fixation), where any credentials the victim subsequently stored in Airflow Connections would be harvestable by the attacker. Users are advised to upgrade `apache-airflow-providers-keycloak` to 0.7.0 or later.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund19 Oct 2026WID-SEC-2026-4052

  Apache Airflow: Multiple vulnerabilities allow bypassing security measures Translated from German

  CVE-2026-86467CVE-2026-40948

[ References ]References

• github.com/apache/airflow/pull/64114patch
• lists.apache.org/thread/kc0odpr70hbqhdb9ksnz42fkqz2xld9qvendor-advisory