Improper Authorization in Apache Airflow - CVE-2026-45426
Published: June 4, 2026
Vulnerability identifier: #VU133384
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-2026-45426
CWE-ID: CWE-285
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 log server JWT authorization logic when handling log access requests for Dag IDs. A remote user can use a valid log-server JWT issued for one Dag to access worker logs of other Dags with names sharing the stripped character-set prefix to disclose sensitive information.
Exploitation requires the attacker to already be an authenticated Airflow worker holding a valid log-server JWT issued for at least one Dag. This affects deployments relying on per-Dag log-access scoping.
How to mitigate CVE-2026-45426
Install security update from vendor's website.