CVE-2026-59243

Description

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`.

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Produits concernés

• Apache Software Foundation Apache Airflow FAB provider
• Apache apache-airflow-providers-fab

Scores CVSS

Faiblesses (CWE)

• CWE-347

Références

• https://github.com/apache/airflow/pull/69374 Patch
• https://lists.apache.org/thread/x4784l7z00tl3gw4tv2dmvoon77rxgpl Mailing ListVendor Advisory
• http://www.openwall.com/lists/oss-security/2026/07/28/10 Mailing ListThird Party Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories