CVE-2026-50203: Apache Apache-Airflow-Providers-Sftp

Critical severity, CVSS 9.1. EPSS: 0.9% chance of exploitation in the next 30 days.

A path traversal in the SFTP provider (`SFTPHook.retrieve_directory` / `SFTPOperator(operation=get)`) let a malicious or compromised remote SFTP server write files outside the configured local destination directory via crafted directory-entry names. No Airflow account is required — the attack surface is any deployment downloading directories from an untrusted SFTP server. Upgrade `apache-airflow-providers-sftp` to 5.8.1 or later.

Affected products

• Apache Apache-Airflow-Providers-Sftp: before 5.8.1 (fixed in 5.8.1)

Published 2026-06-17. Last modified 2026-06-17.