{"id":"CVE-2026-40963","summary":"Apache Airflow: DAG authorization bypass on /ui/structure/structure_data","details":"The structure_data endpoint in the Airflow UI returned external dependency graph nodes for linked Dags without checking whether the caller had read permission on those linked Dags. An authenticated UI/API user authorized for one Dag could enumerate linked Dag IDs and dependency metadata for other Dags they were not authorized to read. Affects deployments that rely on per-Dag read scoping to keep Dag dependency topology private across teams. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.","aliases":["BIT-airflow-2026-40963","GHSA-gprj-xvq8-w53q","PYSEC-2026-2349"],"modified":"2026-08-12T03:51:48.290394605Z","published":"2026-06-01T07:54:33.704Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40963.json","cna_assigner":"apache","cwe_ids":["CWE-285"]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/31/3"},{"type":"WEB","url":"https://pypi.python.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40963.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/s907bhsksc37m59f0loqjcp1ryobrr60"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40963"},{"type":"FIX","url":"https://github.com/apache/airflow/pull/65342"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/airflow","events":[{"introduced":"1fc3442f1307fdf5e1221b26f41266c4fed330d3"},{"fixed":"21cbbf663b140f4a84cf123acb90328a6a4d30f5"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"3.0.0"},{"fixed":"3.2.2"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40963.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}