CVE-2026-94134 Apache Software Foundation CVE debrief

Who should care

Users of apache-airflow-providers-ssh and apache-airflow-providers-sftp should assess their exposure and upgrade to fixed versions. This includes operators, platform administrators, vulnerability management teams, and security teams who rely on Apache Airflow for SSH and SFTP connections.

Why it matters

CVE-2026-94134 allows for impersonation and data capture in Apache Airflow SSH provider hook, requiring verification and upgrade to fixed versions.

• Verify SSH and SFTP connections for potential exposure
• Assess and upgrade to apache-airflow-providers-ssh 7.0.0 and apache-airflow-providers-sftp 7.0.0 or later
• Configure `host_key` or set `no_host_key_check` to false to prevent impersonation

Technical summary

The Apache Airflow SSH provider hook disables SSH host-key verification by default, allowing an attacker in a machine-in-the-middle position to impersonate the server and capture credentials or data. This issue affects SSH and SFTP connections that rely on the default configuration. The vulnerability can be mitigated by configuring `host_key` or setting `no_host_key_check` to false. Users of apache-airflow-providers-ssh and apache-airflow-providers-sftp are recommended to assess their exposure and upgrade to fixed versions.

Defensive priority

Upgrade to apache-airflow-providers-ssh 7.0.0 and apache-airflow-providers-sftp 7.0.0 or later to fix the issue.

Recommended defensive actions

• Upgrade to apache-airflow-providers-ssh 7.0.0 and apache-airflow-providers-sftp 7.0.0 or later
• Configure `host_key` or set `no_host_key_check` to false
• Verify SSH and SFTP connections for potential exposure
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but do not specify versions or exploitation details. The Apache Airflow SSH provider hook's default behavior of disabling SSH host-key verification can be exploited by an attacker in a machine-in-the-middle position. Defenders should verify SSH and SFTP connections for potential exposure and consider upgrading to fixed versions of apache-airflow-providers-ssh and apache-airflow-providers-sftp.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.