CVE-2026-38743 Apache Airflow: Dags endpoint might provide access to otherwise inaccessible entities
Authenticated users can access unauthorized DAG data, including HITL prompts and task details, due to missing per-DAG access controls.
- 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-2026-38743?
CVE-2026-38743 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 authenticated /ui/dags endpoint did not enforce per-DAG access control on embedded Human-in-the-Loop (HITL) and TaskInstance records: a logged-in Airflow user with read access to at least one DAG could retrieve HITL prompts (including their request parameters) and full TaskInstance details for DAGs outside their authorized scope. Because HITL prompts and TaskInstance fields routinely carry operator parameters and free-form context attached to a task, the leak widens visibility of DAG-run data beyond the intended per-DAG RBAC boundary for every authenticated user.
Users are recommended to upgrade to version 3.2.1 , which fixes this issue.
Weakness: CWE-1220
Which versions are affected by CVE-2026-38743?
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-2026-38743?
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-2026-38743 being exploited?
There is no known exploitation of CVE-2026-38743 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-2026-38743, ECHO-4594-a85c-c06f, GHSA-p3v3-229h-mc63, MINI-7f6p-mvh4-ch87, MINI-c797-84mw-mv64, PYSEC-2026-2351.