CVE-2026-50203

EUVD-2026-37520

17.06.2026, 13:20

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.

Path Traversal

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	9.1 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 12%

Affected Products (NVD)

Vendor	Product	Version
apache	apache-airflow-providers-sftp	𝑥 < 5.8.1

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Vulnerability Media Exposure

[GERMAN] Apache Airflow: Schwachstelle ermöglicht Manipulation von Dateien
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Apache Airflow ausnutzen, um Dateien zu manipulieren.
Published: 2026-06-16T22:00:00+00:00

References

https://github.com/apache/airflow/pull/67985

https://lists.apache.org/thread/7f4b284oh44c1n95oq8mh1qc7y1lr9dx

http://www.openwall.com/lists/oss-security/2026/06/16/3