UpHeron
All vulnerabilities

Servers and applications

CVE-2021-26559

Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.

Severity
Medium 6.5
Published
17 Feb 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Apache AirflowServers and applications · cpe:a:apache:airflow
  • Version 2.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-26559
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-26559