Description
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.
Published: 2026-10-15
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
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Remediation

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History

Tue, 27 Oct 2026 05:30:00 +0100

Type Values Removed Values Added
First Time appeared Apache
Apache airflow Sftp Provider
Apache airflow Ssh Provider
Vendors & Products Apache
Apache airflow Sftp Provider
Apache airflow Ssh Provider

Fri, 16 Oct 2026 17:30:00 +0200

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 16 Oct 2026 06:00:00 +0200

Type Values Removed Values Added
References

Fri, 16 Oct 2026 00:00:00 +0200

Type Values Removed Values Added
Description 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.
Title Apache Airflow SSH provider, Apache Airflow SFTP provider: SSH hook disables host-key verification by default
Weaknesses CWE-322
References

Subscriptions

Apache Airflow Sftp Provider Airflow Ssh Provider
cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-10-16T14:53:59.032Z

Reserved: 2026-09-20T18:23:05.037Z

Link: CVE-2026-94134

cve-icon Vulnrichment

Updated: 2026-10-16T14:53:16.292Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-15T22:21:12.023

Modified: 2026-10-16T15:20:39.130

Link: CVE-2026-94134

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T23:36:35Z

Weaknesses
  • CWE-322

    Key Exchange without Entity Authentication