Apache Airflow SFTP provider: Async SFTP hook disables host-key verification by default
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 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. Users 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.
CVE-2026-94135
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-94135
Apache Airflow SFTP provider
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Apache Software Foundation",
"product": "Apache Airflow SFTP provider",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "7.0.0",
"versionType": "semver"
}
],
"packageURL": "pkg:pypi/apache-airflow-providers-sftp",
"packageName": "apache-airflow-providers-sftp",
"collectionURL": "https://pypi.python.org",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-94135
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #32555 · Revision 1
- Added to Heist Feed
- Publisher date