Improper Handling of Windows Device Names Affecting airflow-3-compat package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-AIRFLOW3COMPAT-15051987
  • published22 Jan 2026
  • disclosed8 Jan 2026

Introduced: 8 Jan 2026

CVE-2026-21860  (opens in a new tab)
CWE-67  (opens in a new tab)

How to fix?

There is no fixed version for Minimos:latest airflow-3-compat.

NVD Description

Note: Versions mentioned in the description apply only to the upstream airflow-3-compat package and not the airflow-3-compat package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Werkzeug is a comprehensive WSGI web application library. Prior to version 3.1.5, Werkzeug's safe_join function allows path segments with Windows device names that have file extensions or trailing spaces. On Windows, there are special device names such as CON, AUX, etc that are implicitly present and readable in every directory. Windows still accepts them with any file extension, such as CON.txt, or trailing spaces such as CON. This issue has been patched in version 3.1.5.

CVSS Base Scores

version 3.1