8.1

CVE-2026-86466

Apache Airflow FAB provider: FAB Authentik provider: id_token issuer/audience not validated

Apache Airflow FAB provider: the Authentik OAuth path in the FAB auth manager does not validate the issuer or audience claims of the id_token it accepts. An attacker holding a token that the same Authentik identity provider minted for a different client application can present it to Airflow and be authenticated as the user it names, because the audience claim is never checked. Affects deployments using the FAB auth manager with Authentik OAuth where the same Authentik instance also serves other applications; the attacker needs a valid token for any of those other applications, not for Airflow.

CVE-2026-75156 corrected the same missing validation on the Azure AD path in this file; the Authentik path was left unchanged and is fixed here. Deployments that applied the CVE-2026-75156 fix and use Authentik must also upgrade for this one.

Users of apache-airflow-providers-fab are recommended to upgrade to version 3.9.0 or later, which fixes the issue.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.036
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 8.1 2.8 5.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE-346 Origin Validation Error

The product does not properly verify that the source of data or communication is valid.

https://github.com/apache/airflow/pull/72645
Patch
Vendor Advisory
https://www.cve.org/CVERecord?id=CVE-2026-75156
Third Party Advisory
https://lists.apache.org/thread/qh7fobs16p2hgln2yblbgf8ty4dvf4y7
Vendor Advisory
Mailing List
https://lists.apache.org/thread/qh7fobs16p2hgln2yblbgf8ty4dvf4y7?users@airflow.apache.org
Vendor Advisory
Mailing List