CVE-2026-40963: Apache Airflow: DAG authorization bypass on /ui/structure/structure_data
This Apache advisory covers CVE-2026-40963 in Apache Airflow.
- CVE-2026-40963
Key facts
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N· base score 3.1, scored by CISA-ADPAttack vector: network. Attack complexity: high. Privileges required: low. User interaction: none. Scope: unchanged. Confidentiality impact: low. Integrity impact: none. Availability impact: none.- Weakness
- CWE-285: Improper Authorization
- CISA SSVC
- Exploitation: none observed. Automatable: no. Technical impact: partial. CISA, .
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Apache Airflow 3.0.0 before 3.2.2
- Fixed in
- 3.2.2
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
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.
Text from the source record.
- Apache Airflow 3.0.0 before 3.2.2
Official advisory · medium-confidence parse· fetched ·verify at source
How to fix CVE-2026-40963
Upgrade to a fixed release named by Apache:
- 3.2.2
Vendor guidance
- Users are advised to upgrade to `apache-airflow` 3.2.2 or later.
Support dates for the fixed release lines
- Apache Airflow 3.2: support ended
More Apache Software Foundation advisories
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Apache Software Foundation advisories, June 2026All Apache Software Foundation advisories
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