{"id":"CVE-2026-94135","title":"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","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":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","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":"2026-10-16T15:20:39.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-94135","references":[{"url":"https://github.com/apache/airflow/pull/73419","label":"security@apache.org"},{"url":"https://lists.apache.org/thread/jbzs97t9y1zd1yp5rvxzjbx90mqz82kf","label":"security@apache.org"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-94134","label":"security@apache.org"}],"tags":["nvd","cve.org"],"epss":0.0038,"epssPercentile":0.31795,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T14:46:17.150791Z"},"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## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":223051,"id":"CVE-2026-94135","ts":1792164080132,"field":"cvss","old":null,"new":"4.3"},{"seq":223050,"id":"CVE-2026-94135","ts":1792164080132,"field":"severity","old":"none","new":"medium"}]}