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.

• CWE-269
• CWE-306

• https://lists.apache.org/thread.html/rac2ed9118f64733e47b4f1e82ddc8c8020774698f13328ca742b03a2%40%3Cannounce.apache.org%3E
• https://lists.apache.org/thread.html/rb34c3dd1a815456355217eef34060789f771b6f77c3a3dec77de2064%40%3Cusers.airflow.apache.org%3EMailing List, Vendor Advisory
• https://lists.apache.org/thread.html/rac2ed9118f64733e47b4f1e82ddc8c8020774698f13328ca742b03a2%40%3Cannounce.apache.org%3E
• https://lists.apache.org/thread.html/rb34c3dd1a815456355217eef34060789f771b6f77c3a3dec77de2064%40%3Cusers.airflow.apache.org%3EMailing List, Vendor Advisory

Published

Sep 9, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-38535Certain NETGEAR devices are affected by stored XSS. This aff…4.8
• CVE-2021-38536Certain NETGEAR devices are affected by stored XSS. This aff…4.8
• CVE-2021-38537Certain NETGEAR devices are affected by stored XSS. This aff…4.8
• CVE-2021-38538Certain NETGEAR devices are affected by stored XSS. This aff…6.1
• CVE-2021-38539Certain NETGEAR devices are affected by privilege escalation…8.8
• CVE-2021-3854Improper Neutralization of Special Elements used in an SQL C…9.8
• CVE-2021-38542Apache James prior to release 3.6.1 is vulnerable to a buffe…5.9
• CVE-2021-38543TP-Link UE330 USB splitter devices through 2021-08-09, in ce…5.9
• CVE-2021-38544Sony SRS-XB33 and SRS-XB43 devices through 2021-08-09 allow …5.9
• CVE-2021-38545Raspberry Pi 3 B+ and 4 B devices through 2021-08-09, in cer…5.9
• CVE-2021-38546CREATIVE Pebble devices through 2021-08-09 allow remote atta…5.9
• CVE-2021-38547Logitech Z120 and S120 speakers through 2021-08-09 allow rem…5.9