What’s Vulnerable › Vulnerabilities

CVE-2026-40963: Apache Airflow: DAG authorization bypass on /ui/structure/structure_data

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-01 · updated 2026-07-21
• Weakness: CWE-285

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.

Affected products

• Apache Airflow: from 3.0.0 before 3.2.2 — fixed in 3.2.2

How to fix

Upgrade to a fixed version: Apache Airflow 3.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/apache/airflow/pull/65342
• https://lists.apache.org/thread/s907bhsksc37m59f0loqjcp1ryobrr60
• http://www.openwall.com/lists/oss-security/2026/05/31/3

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