CVE-2026-94134
CRITICALDescription
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. Users 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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 49% of all known CVEs.
References
Related Vulnerabilities
Other CWE-322 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-1709 | Critical | 9.4 | 5.8% | - | Fix |
| CVE-2022-39249 | High | 7.5 | 1.3% | - | Fix |
| CVE-2022-39250 | High | 8.6 | 1.2% | - | Fix |
| CVE-2022-39251 | High | 8.6 | 1.2% | - | Fix |
| CVE-2022-39255 | High | 8.6 | 1.0% | - | Fix |
| CVE-2022-39257 | High | 7.5 | 1.0% | - | Fix |
Common questions
How do I fix CVE-2026-94134?
No published fix for CVE-2026-94134 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-94134 being actively exploited?
Not that we know of. CVE-2026-94134 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.60% is the estimated probability that it will be exploited in the next 30 days. That is higher than 49% of all scored CVEs.
How severe is CVE-2026-94134?
CVE-2026-94134 has a CVSS v3 base score of 9.1, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-16.