[Security] [P2] CVE-2025-66221 GHSA-hgf8-39gv-g3f2 — werkzeug (qbeast-spark)

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Dependabot Security Alert

Field	Value
GHSA	GHSA-hgf8-39gv-g3f2
CVE	CVE-2025-66221
Severity	medium
Package	werkzeug (pip)
Affected version	runtime
Summary	Werkzeug safe_join() allows Windows special device names
Repository	Qbeast-io/qbeast-spark

Description

Werkzeug's safe_join function allows path segments with Windows device names. On Windows, there are special device names such as CON, AUX, etc that are implicitly present and readable in every directory. 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.

Alert link

View on GitHub

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Automatically created by the Vanta/Dependabot → ZenHub sync pipeline
GHSA: GHSA-hgf8-39gv-g3f2

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The underlying Vanta vulnerability CVE-2025-66221 is no longer reported as open (fixed, dismissed, or deactivated) as of 2026-05-01T07:01:04+00:00 UTC.

Please close this issue once the fix has been verified.