CVE-2026-50203 — Vulnerability in apache-airflow-providers-sftp —...

CRITICAL

Apache Airflow SFTP provider: Path traversal in SFTPHook.retrieve_directory

Published June 17, 2026Updated September 10, 2026Source: osv

Summary

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.

Advisory Timeline

First published June 17, 2026 (117 days ago).
Last revised September 10, 2026 — 84 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

pip

Update apache-airflow-providers-sftp to 5.8.1 or later

pip install "apache-airflow-providers-sftp>=5.8.1"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: pypi (1).

Package	Ecosystem	Affected	Fixed In
apache-airflow-providers-sftp	pypi	1.0.0, 1.0.0b1, 1.0.0b2, 1.0.0rc1 (+132 more)	5.8.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-22
Path TraversalMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.1 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Frequently Asked Questions

What is CVE-2026-50203?: Apache Airflow SFTP provider: Path traversal in SFTPHook.retrieve_directory This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.1/10).
How do I check if my project is affected by CVE-2026-50203?: CVE-2026-50203 affects apache-airflow-providers-sftp. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-50203 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.1

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-qf38-jq28-3ccq

PYSEC-2026-218

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