CVE-2026-40963: Apache Airflow

Low severity, CVSS 3.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Airflow: from 3.0.0, before 3.2.2 (fixed in 3.2.2)

Published 2026-06-01. Last modified 2026-07-21.