Airflow UI structure_data Endpoint Exposes Linked Dag Info (before 3.2.2)
CVE-2026-40963 Published on June 1, 2026
Apache Airflow: DAG authorization bypass on /ui/structure/structure_data
The structure_data endpoint in the Airflow UI returned external dependency graph nodes for linked Dags without checking whether the caller had read permission on those linked Dags. An authenticated UI/API user authorized for one Dag could enumerate linked Dag IDs and dependency metadata for other Dags they were not authorized to read. Affects deployments that rely on per-Dag read scoping to keep Dag dependency topology private across teams. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.
Vulnerability Analysis
CVE-2026-40963 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-40963 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-40963
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Affected Versions
Apache Software Foundation Apache Airflow:- Version 3.0.0 and below 3.2.2 is affected.