CVE-2026-48891 Apache Airflow exposes unreadable DAG identifiers in the scheduling dependencies graph
Authenticated users can enumerate unauthorized DAG identifiers via dependency graph fields, leaking private workflow names 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-2026-48891?
CVE-2026-48891 is a medium-severity vulnerability in Apache Airflow, published on 7 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A bug in Apache Airflow's `/ui/dependencies` scheduling graph endpoint applied the caller's readable-Dag filter to the top-level serialized Dag key but still emitted referenced Dag IDs through the `dep.source` and `dep.target` fields of trigger / sensor dependency entries. An authenticated UI user with read permission on some Dags could enumerate the identifiers of other Dags they were not authorized to read by inspecting the dependency graph for trigger / sensor references. Affects deployments that rely on per-Dag read scoping to keep Dag identifiers private across teams. This is a residual gap in the fix for CVE-2026-28563, which filtered the top-level Dag key but did not propagate the filter into the trigger / sensor dep-source / dep-target fields. Users who already upgraded for CVE-2026-28563 should additionally upgrade to `apache-airflow` 3.3.0 or later to cover the residual trigger / sensor dependency leak.
Weakness: CWE-200
Which versions are affected by CVE-2026-48891?
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 | 3.3.0 |
apache-airflow PyPI | All versions | 3.3.0 |
apache-airflow PyPI | All versions | 3.3.0 |
airflow Bitnami | All versions | 3.3.0 |
Products include Apache Airflow.
How do I fix CVE-2026-48891?
Upgrade apache-airflow to 3.3.0 or later.
Is CVE-2026-48891 being exploited?
There is no known exploitation of CVE-2026-48891 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-2026-48891, CLEANSTART-2026-AK03050, CLEANSTART-2026-WT65883, ECHO-fc1c-ad29-231d, GHSA-3322-mjxh-9mp5, MINI-488q-23mg-49q8 and 2 more.