{"id":"CVE-2026-94135","title":"Apache Airflow SFTP provider: Async SFTP hook disables host-key verification by default","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…","severity":"none","cwe":["CWE-322"],"vendor":"Apache Software Foundation","product":"apache-airflow-providers-sftp","affected":["apache-airflow-providers-sftp < 7.0.0"],"published":"2026-10-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T03:39:13.211Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-94135","references":[{"url":"https://github.com/apache/airflow/pull/73419"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-94134"},{"url":"https://lists.apache.org/thread/jbzs97t9y1zd1yp5rvxzjbx90mqz82kf"}],"tags":["cve.org"],"ingestedAt":"2026-10-15T22:48:25.375Z","slug":"CVE-2026-94135","body":"## Overview\n\nThe 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.\n\nUsers 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.\n\n## Affected\n\n- `apache-airflow-providers-sftp < 7.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}