Vulnerability Details CVE-2026-40963
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.2%
CVSS Severity
CVSS v3 Score 3.1
References
Products affected by CVE-2026-40963
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cpe:2.3:a:apache:airflow:3.0.0
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cpe:2.3:a:apache:airflow:3.0.1
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cpe:2.3:a:apache:airflow:3.0.2
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cpe:2.3:a:apache:airflow:3.0.3
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cpe:2.3:a:apache:airflow:3.0.4
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cpe:2.3:a:apache:airflow:3.0.5
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cpe:2.3:a:apache:airflow:3.0.6
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cpe:2.3:a:apache:airflow:3.1.0
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cpe:2.3:a:apache:airflow:3.1.1
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cpe:2.3:a:apache:airflow:3.1.2
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cpe:2.3:a:apache:airflow:3.1.3
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cpe:2.3:a:apache:airflow:3.1.4
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cpe:2.3:a:apache:airflow:3.1.5
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cpe:2.3:a:apache:airflow:3.1.6
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cpe:2.3:a:apache:airflow:3.1.7
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cpe:2.3:a:apache:airflow:3.1.8
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cpe:2.3:a:apache:airflow:3.2.0
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cpe:2.3:a:apache:airflow:3.2.1