oss-security - CVE-2026-45361: Apache Airflow Google provider: SSH host key verification disabled in ComputeEngineSSHHook (paramiko AutoAddPolicy default)

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Message-ID: <ec3d4210-b550-dd83-c79d-90594bcfcbf4@apache.org>
Date: Sun, 24 May 2026 20:12:05 +0000
From: Jens Scheffler <jscheffl@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-45361: Apache Airflow Google provider: SSH host key
 verification disabled in ComputeEngineSSHHook (paramiko AutoAddPolicy
 default) 

Severity: low 

Affected versions:

- Apache Airflow Google provider (apache-airflow-providers-google) before 22.0.0

Description:

Apache Airflow providers-google's `ComputeEngineSSHHook` disables SSH host-key verification by default, exposing SSH traffic between an Airflow worker and a Compute Engine VM to in-path network attackers who can intercept or modify the session. Users are advised to upgrade to `apache-airflow-providers-google` 22.0.0 or later.

Credit:

Michael Winser (Mythos scan — internal partner; no credit-form question needed) (finder)
Jarek Potiuk (remediation developer)

References:

https://github.com/apache/airflow/pull/66746
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-45361

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