{"schemaVersion":3,"id":"CVE-2026-94134","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The Apache Airflow SSH provider hook disables SSH host-key verification by default: unless `host_key` is configured or `no_host_key_check` is explicitly set to false, it accepts any server key. This affects SSH and SFTP connections that rely on the default. An attacker in a machine-in-the-middle position between the worker and the SSH or SFTP server can impersonate the server and capture the credentials or data a task sends.\n\nUsers of apache-airflow-providers-ssh and apache-airflow-providers-sftp are recommended to upgrade to apache-airflow-providers-ssh 7.0.0 and apache-airflow-providers-sftp 7.0.0 or later. The deferrable SFTP code paths had the same default and are covered separately by CVE-2026-94135; apache-airflow-providers-sftp 7.0.0 fixes both.","dates":{"published":"2026-10-15T21:39:03.081Z","modified":"2026-10-16T14:53:59.032Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.1,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.1,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.1,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.003,"percentile":0.21219,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-16T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.003,"percentile":0.21219}],"last30":[{"date":"2026-10-16T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.003,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.003,"percentile":0.21219}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-322","name":"Key Exchange without Entity Authentication","description":"The product performs a key exchange with an actor without verifying the identity of that actor.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/322.html"}],"affected":[{"vendor":"apache software foundation","product":"apache airflow sftp provider","name":"Apache Airflow SFTP provider","label":"apache airflow sftp provider","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 7.0.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.0.0","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_airflow_sftp_provider"},{"vendor":"apache software foundation","product":"apache airflow ssh provider","name":"Apache Airflow SSH provider","label":"apache airflow ssh provider","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 7.0.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.0.0","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_airflow_ssh_provider"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/apache/airflow/pull/73419","label":"github.com/apache/airflow/pull/73419","hostname":"github.com","tags":["Patch"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-94135","label":"www.cve.org/CVERecord?id=CVE-2026-94135","hostname":"www.cve.org","tags":["Related"]},{"url":"https://lists.apache.org/thread/ksr1lztvd3zr74f8xd1hzch1ssl0l3lj","label":"lists.apache.org/thread/ksr1lztvd3zr74f8xd1hzch1ssl0l3lj","hostname":"lists.apache.org","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-15T21:39:03.081Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-16T14:53:59.032Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T00:52:40.237Z","stale":false,"partial":false}}