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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-94135
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 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.

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 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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