Improper access control in Apache Airflow - CVE-2026-40963
Published: June 4, 2026
Vulnerability identifier: #VU133376
CSH Severity: Low
CVSS v4: 5.3 [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]
CVE-ID: CVE-2026-40963
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Apache Airflow
How to mitigate CVE-2026-40963
Install security update from vendor's website.
Apache Airflow - update to 3.2.2