Severity: moderate Affected versions:
- Apache Airflow before 3.3.2 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. Credit: n0mi1k (finder) Jarek Potiuk (remediation developer) References: https://github.com/apache/airflow/pull/71741 https://airflow.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-75158
