{"id":"CVE-2026-94134","state":"PUBLISHED","title":"Apache Airflow SSH provider, Apache Airflow SFTP provider: SSH hook disables host-key verification by default","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.","publishedAt":"2026-10-15T21:39:03.081Z","updatedAt":"2026-10-16T14:53:59.032Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache Airflow SSH provider","Apache Software Foundation Apache Airflow SFTP provider"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Airflow SSH provider","packageName":"apache-airflow-providers-ssh","packageURL":"pkg:pypi/apache-airflow-providers-ssh","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.0","versionType":"semver"}],"collectionURL":"https://pypi.python.org"},{"vendor":"Apache Software Foundation","product":"Apache Airflow SFTP provider","packageName":"apache-airflow-providers-sftp","packageURL":"pkg:pypi/apache-airflow-providers-sftp","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.0","versionType":"semver"}],"collectionURL":"https://pypi.python.org"}],"references":["https://github.com/apache/airflow/pull/73419","https://www.cve.org/CVERecord?id=CVE-2026-94135","https://lists.apache.org/thread/ksr1lztvd3zr74f8xd1hzch1ssl0l3lj"],"weaknesses":["CWE-322"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/94xxx/CVE-2026-94134.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-94134","state":"PUBLISHED","datePublished":"2026-10-15T21:39:03.081Z","dateUpdated":"2026-10-16T14:53:59.032Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-09-20T18:23:05.037Z"},"containers":{"cna":{"title":"Apache Airflow SSH provider, Apache Airflow SFTP provider: SSH hook disables host-key verification by default","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Airflow SSH provider","packageName":"apache-airflow-providers-ssh","packageURL":"pkg:pypi/apache-airflow-providers-ssh","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.0","versionType":"semver"}],"collectionURL":"https://pypi.python.org"},{"vendor":"Apache Software Foundation","product":"Apache Airflow SFTP provider","packageName":"apache-airflow-providers-sftp","packageURL":"pkg:pypi/apache-airflow-providers-sftp","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.0","versionType":"semver"}],"collectionURL":"https://pypi.python.org"}],"references":[{"url":"https://github.com/apache/airflow/pull/73419","tags":["patch"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-94135","tags":["related"]},{"url":"https://lists.apache.org/thread/ksr1lztvd3zr74f8xd1hzch1ssl0l3lj","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"moderate"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-322","description":"CWE-322: Key Exchange without Entity Authentication","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-10-16T03:39:17.565Z"},"source":{"discovery":"UNKNOWN"},"credits":[{"lang":"en","value":"Claude Security Scans","type":"tool"},{"lang":"en","value":"Igor Stepansky, OX Security","type":"finder"},{"lang":"en","value":"Jarek Potiuk","type":"remediation developer"}],"x_generator":{"engine":"airflow-s/generate_cve_json.py"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-16T14:53:40.519965Z","id":"CVE-2026-94134","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T14:53:59.032Z"}}]}}}