CVE-2026-40690 Apache Airflow's asset dependency graph did not restrict nodes by the viewer's DAG read permissions
Unauthorized users can view asset graphs and DAG names outside their permissions, exposing sensitive workflow topology information.
- 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-2026-40690?
CVE-2026-40690 is a medium-severity missing authorization vulnerability in Apache Airflow, published on 24 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The asset dependency graph did not restrict nodes by the viewer's DAG read permissions: a user with read access to at least one DAG could browse the asset graph for any other asset in the deployment and learn the existence and names of DAGs and assets outside their authorized scope.
Users are recommended to upgrade to version 3.2.1, which fixes this issue.
Weakness: CWE-1220
Which versions are affected by CVE-2026-40690?
4 open source packages ship an affected version, including apache-airflow and airflow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache-airflow PyPI | All versions | 3.2.1rc1 |
apache-airflow PyPI | All versions | 3.2.1rc1 |
apache-airflow PyPI | All versions | 3.2.1rc1 |
airflow Bitnami | All versions | 3.2.1 |
Products include Apache Airflow.
How do I fix CVE-2026-40690?
Upgrade apache-airflow to 3.2.1rc1 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-40690 being exploited?
There is no known exploitation of CVE-2026-40690 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-2026-40690, ECHO-ca66-ca7a-bec4, GHSA-w7rc-q6cm-f5gm, MINI-j6r2-3v7h-ghq9, MINI-xphv-m3vp-h3vx, PYSEC-2026-2356.