CVE-2026-40963 Apache Airflow: DAG authorization bypass on /ui/structure/structure_data
Authenticated users can bypass DAG read permissions to enumerate linked DAG IDs and dependency metadata in Apache Airflow.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-40963?
CVE-2026-40963 is a low-severity missing authorization vulnerability in Apache Airflow, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-285
Which versions are affected by CVE-2026-40963?
4 open source packages ship an affected version, including apache-airflow and airflow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache-airflow PyPI | From 3.0.0 | 3.2.2 |
apache-airflow PyPI | From 3.0.0 | 3.2.2 |
apache-airflow PyPI | From 3.0.0 | 3.2.2 |
airflow Bitnami | From 3.0.0 | 3.2.2 |
Products include Apache Airflow.
How do I fix CVE-2026-40963?
Upgrade apache-airflow to 3.2.2 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-40963 being exploited?
There is no known exploitation of CVE-2026-40963 in the wild and no public exploit code.
Other vulnerabilities in Apache Airflow
- CVE-2020-13927 Apache Airflow's Experimental API Authentication Bypass
- CVE-2020-11978 Apache Airflow Command Injection
- CVE-2026-33264 Apache Airflow: DAG author RCE on webserver via unrestricted import_string() in BaseSerialization.deserialize()
- CVE-2023-25754 Apache Airflow: Privilege escalation using airflow logs
- CVE-2023-22884 Apache Airflow, Apache Airflow MySQL Provider: Arbitrary file read via MySQL provider in Apache Airflow
Sources
Also known as BIT-airflow-2026-40963, ECHO-583e-ad50-6ee4, GHSA-gprj-xvq8-w53q, MINI-v87x-6h54-4vjx, PYSEC-2026-2349.