CVE-2026-94134
Apache Airflow SSH provider, Apache Airflow SFTP provider: SSH hook disables host-key verification by default
The Apache Airflow SSH provider hook disables SSH host-key verification by default: unless `host_key` is configured or `no_host_key_check` is explicitly set to false, it accepts any server key. This affects SSH and SFTP connections that rely on the default. An attacker in a machine-in-the-middle position between the worker and the SSH or SFTP server can impersonate the server and capture the credentials or data a task sends. Users of apache-airflow-providers-ssh and apache-airflow-providers-sftp are recommended to upgrade to apache-airflow-providers-ssh 7.0.0 and apache-airflow-providers-sftp 7.0.0 or later. The deferrable SFTP code paths had the same default and are covered separately by CVE-2026-94135; apache-airflow-providers-sftp 7.0.0 fixes both.
- Affected
- Apache Software Foundation · Apache Airflow SSH provider · Apache Airflow SFTP provider
- CVSS v3.1 CISA-ADP
- 9.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - EPSS
- 0.30% chance of exploitation in the next 30 days, 21st percentile
- Published
- 2026-10-15
- Updated
- 2026-10-16