Improper access control in Apache Airflow - CVE-2026-40963
Published: June 4, 2026
Vulnerability identifier: #VU133376
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-40963
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
Apache Airflow
Apache Airflow
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in the structure_data endpoint when handling requests for linked Dag dependency data. A remote user can send a request for dependency graph data to disclose sensitive information.
This affects deployments that rely on per-Dag read scoping to keep Dag dependency topology private across teams.
How to mitigate CVE-2026-40963
Install security update from vendor's website.