CVE-2026-94134

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.

• CWE-322

• https://github.com/apache/airflow/pull/73419
• https://lists.apache.org/thread/ksr1lztvd3zr74f8xd1hzch1ssl0l3lj
• https://www.cve.org/CVERecord?id=CVE-2026-94135

Published

Oct 15, 2026

Last Modified

Oct 16, 2026

Status

Awaiting Analysis

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