Apache Airflow SSH provider, Apache Airflow SFTP provider: SSH hook disables host-key verification by default

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-94134
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-15 22:21:12 UTC
Updated2026-10-15 22:21:12 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: CWE-322 | CWE-322 CWE-322: Key Exchange without Entity Authentication

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Airflow SSH Provider affected 7.0.0 semver Not specified
CNA Apache Software Foundation Apache Airflow SFTP Provider affected 7.0.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/apache/airflow/pull/73419 [email protected] github.com
www.cve.org/CVERecord [email protected] www.cve.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Claude Security Scans (en)

CNA: Igor Stepansky, OX Security (en)

CNA: Jarek Potiuk (en)

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