Authenticated DAG metadata disclosure via missing read checks
Published Jun 1, 2026 · Updated Jun 1, 2026
Improper authorization in Apache Airflow 3.0.0 through 3.2.1 allows remote authenticated users to read linked DAG metadata. The structure_data endpoint includes external dependency nodes without filtering both the dependency DAG ID and real target DAG IDs against the caller’s readable DAG set. Exploitation requires access to one linked DAG and reveals only other linked DAG IDs and trigger or sensor topology in deployments enforcing per-DAG read isolation.
Summary
What happened
Improper authorization in Apache Airflow 3.0.0 through 3.2.1 allows remote authenticated users to read linked DAG metadata. The structure_data endpoint includes external dependency nodes without filtering both the dependency DAG ID and real target DAG IDs against the caller’s readable DAG set. Exploitation requires access to one linked DAG and reveals only other linked DAG IDs and trigger or sensor topology in deployments enforcing per-DAG read isolation.
The record
- CVE
- CVE-2026-40963
- Published
- Jun 1, 2026
- Updated
- Jun 1, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache Airflow
- Classifications
- CWE-285
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 1, 2026CVE publishedPublication date reported by the CVE source.
- Jun 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=3.0.0 <3.2.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
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Your stack
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