All vulnerabilities

Servers and applications

CVE-2021-38540

The variable import endpoint was not protected by authentication in Airflow >=2.0.0, <2.1.3. This allowed unauthenticated users to hit that endpoint to add/modify Airflow variables used in DAGs, potentially resulting in a denial of service, information disclosure or remote code execution. This issue affects Apache Airflow >=2.0.0, <2.1.3.

Severity
Critical 9.8
Published
9 Sept 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.1.3
Sources
NVD

Affected software

SoftwareAffected versions
Apache AirflowServers and applications · cpe:a:apache:airflow
  • From 2.0.0 before 2.1.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-38540
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-38540