{"id":"BIT-airflow-2021-38540","summary":"Apache Airflow: Variable Import endpoint missed authentication check","details":"The variable import endpoint was not protected by authentication in Airflow \u003e=2.0.0, \u003c2.1.3. 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 \u003e=2.0.0, \u003c2.1.3.","aliases":["CVE-2021-38540","GHSA-h88f-r7cw-8fv3","PYSEC-2021-326"],"modified":"2026-09-08T08:45:24.786159155Z","published":"2024-03-06T10:58:56.460Z","database_specific":{"severity":"Critical","cpes":["cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/rac2ed9118f64733e47b4f1e82ddc8c8020774698f13328ca742b03a2%40%3Cannounce.apache.org%3E"},{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/rb34c3dd1a815456355217eef34060789f771b6f77c3a3dec77de2064%40%3Cusers.airflow.apache.org%3E"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38540"}],"affected":[{"package":{"name":"airflow","ecosystem":"Bitnami","purl":"pkg:bitnami/airflow"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.1.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/airflow/BIT-airflow-2021-38540.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}