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.
{
"cna_assigner": "apache",
"cwe_ids": [
"CWE-322"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94135.json"
}