PT-2026-65767 · Apache · Apache Airflow Fab Provider

·

CVE-2026-59243

·

Published

2026-07-29

·

Updated

2026-07-29

None

No severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
The FAB auth manager's Azure AD OAuth login defaulted verify signature=False when decoding the ID token, so an attacker able to present a forged or unsigned (alg:none) ID token to the OAuth callback could bypass authentication and log in as an arbitrary user, including one holding the Admin role (CWE-347). Deployments running the FAB auth manager with the Azure AD OAuth login path under its default configuration are affected; the Authentik path already defaulted to True. This issue affects apache-airflow-providers-fab before 3.7.3. Users are advised to upgrade to apache-airflow-providers-fab 3.7.3, which defaults verify signature=True.

Improper Verification of Cryptographic Signature

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

CVE-2026-59243

Affected Products

Apache Airflow Fab Provider