CVE Catalog

CVE-2026-94135

Unknown
Published: Updated: Translated: NVD NIST

Summary

The 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.

Risk Assessment

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. This poses a risk of data leakage and credential compromise.

Recommendation

Upgrade apache-airflow-providers-sftp to version 7.0.0 or later, which fixes this issue (along with the related CVE-2026-94134). Ensure host-key verification is not disabled in connection configurations.

Related vulnerabilities

Original NVD description (English source)

The 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS