CVE-2026-40963

Apache Airflow: DAG authorization bypass on /ui/structure/structure_data

publishedCWE-285

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.

Technical severity3.1 lowCVSS 3.1 · ADP: CISA-ADP

Published2026-06-01Source updated 2026-11-03

Collected2026-11-032 attributed sources

Fixes and workarounds

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: CNA: apache

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Apache Airflow Apache Software Foundation `apache-airflow-core` pypi	≥ 3.0.0; < 3.2.2 (affected, semver) Other versions: unaffected	CNA: apache

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 3.1 low	`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N`	ADP: CISA-ADP

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://github.com/apache/airflow/pull/65342CNA: apache · patch
https://lists.apache.org/thread/s907bhsksc37m59f0loqjcp1ryobrr60CNA: apache · vendor-advisory
http://www.openwall.com/lists/oss-security/2026/05/31/3ADP: CVE

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