CVE-2026-50203
Apache Airflow SFTP provider: Path traversal in SFTPHook.retrieve_directory allows local file write outside the destination directory via malicious server-supplied directory-entry names
Description
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.
INFO
Published Date :
June 17, 2026, 1:20 p.m.
Last Modified :
June 17, 2026, 7:04 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade apache-airflow-providers-sftp to 5.8.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-50203.
| URL | Resource |
|---|---|
| https://github.com/apache/airflow/pull/67985 | Issue Tracking Patch |
| https://lists.apache.org/thread/7f4b284oh44c1n95oq8mh1qc7y1lr9dx | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/06/16/3 | Mailing List Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-50203 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-50203
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-50203 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-50203 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:apache-airflow-providers-sftp:*:*:*:*:*:*:*:* versions up to (excluding) 5.8.1 Added Reference Type Apache Software Foundation: https://github.com/apache/airflow/pull/67985 Types: Issue Tracking, Patch Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/7f4b284oh44c1n95oq8mh1qc7y1lr9dx Types: Mailing List, Vendor Advisory Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/06/16/3 Types: Mailing List, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Added SSVC {'id': 'CVE-2026-50203', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-17T14:56:30.527395Z'} -
New CVE Received by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache Airflow SFTP provider', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.8.1', 'versionType': 'semver'}], 'packageName': 'apache-airflow-providers-sftp', 'collectionURL': 'https://pypi.python.org', 'defaultStatus': 'unaffected'}] Added Description 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. Added CWE CWE-22 Added Reference https://github.com/apache/airflow/pull/67985 Added Reference https://lists.apache.org/thread/7f4b284oh44c1n95oq8mh1qc7y1lr9dx -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jun. 17, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/06/16/3