CVE-2025-66388: Apache Airflow

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability in Apache Airflow allowed authenticated UI users to view secret values in rendered templates due to secrets not being properly redacted, potentially exposing secrets to users without the appropriate authorization. Users are recommended to upgrade to version 3.1.4, which fixes this issue.

Affected products

• Apache Airflow: from 3.1.0, before 3.1.4 (fixed in 3.1.4)

Published 2025-12-15. Last modified 2026-10-07.