Description
Apache Airflow's `/assets/events` API returned asset events for every Dag in the deployment, with no filter restricting them to the Dags the caller is authorized to read. Any authenticated user holding asset-read access could therefore enumerate asset events — including the source Dag ID, task ID, run ID and event timestamps — for Dags they have no permission to see. Because the filter was also absent from the count query, `total_entries` and pagination disclosed the existence of hidden Dags even without inspecting individual rows. Deployments are affected whenever per-Dag access control is used to separate teams or tenants; no special configuration is required. Upgrade to apache-airflow 3.3.2 or later.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Airflow | < 3.3.2 |
References
- https://github.com/apache/airflow/pull/71741Issue Tracking, Vendor Advisory
- https://lists.apache.org/thread/rx5lg86l0qkjl2s7dtmpqxjq0xplr4fyMailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/09/21/3Mailing List, Third Party Advisory
Timeline
- Published
- Sep 21, 2026
- Last modified
- Nov 3, 2026
- NVD status
- Analyzed