Improper Handling of Windows Device Names Affecting airflow-2-compat package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-AIRFLOW2COMPAT-15339682
  • published25 Feb 2026
  • disclosed21 Feb 2026

Introduced: 21 Feb 2026

NewCVE-2026-27199  (opens in a new tab)
CWE-67  (opens in a new tab)

How to fix?

There is no fixed version for Minimos:latest airflow-2-compat.

NVD Description

Note: Versions mentioned in the description apply only to the upstream airflow-2-compat package and not the airflow-2-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. Versions 3.1.5 and below, the safe_join function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that safe_join accepts paths with multiple segments, such as example/NUL. The function send_from_directory uses safe_join to safely serve files at user-specified paths under a directory. If the application is running on Windows, and the requested path ends with a special device name, the file will be opened successfully, but reading will hang indefinitely. This issue has been fixed in version 3.1.6.

CVSS Base Scores

version 3.1