Severity: moderate Affected versions:
- Apache Airflow SFTP provider before 7.0.0 Description: The Apache Airflow SFTP provider's deferrable code paths (`SFTPTrigger`, `SFTPHookAsync`, `SFTPClientPool`) disable SSH host-key verification by default unless the connection explicitly sets `no_host_key_check` to false. Deployments that run SFTP sensors or operators in deferrable mode are affected. An attacker in a machine-in-the-middle position between the triggerer and the SFTP server can impersonate the server and capture the credentials or data exchanged. Users of apache-airflow-providers-sftp are recommended to upgrade to apache-airflow-providers-sftp 7.0.0 or later. This is a separate defect from CVE-2026-94134 (the synchronous SSH hook default, which also affects the SFTP hook); users who applied the fix for one also need this release for the other - apache-airflow-providers-sftp 7.0.0 fixes both. Credit: Claude Security Scans (tool) Igor Stepansky, OX Security (finder) Jarek Potiuk (remediation developer) References: https://github.com/apache/airflow/pull/73419 https://www.cve.org/CVERecord?id=CVE-2026-94134 https://airflow.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-94135
