CVE-2025-66221 Werkzeug safe_join() allows Windows special device names

Werkzeug is a comprehensive WSGI web application library. Prior to version 3.1.4, Werkzeug's safejoin 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...

CVE-2025-66221 Werkzeug safe_join() allows Windows special device names

Werkzeug is a comprehensive WSGI web application library. Prior to version 3.1.4, Werkzeug's safejoin 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...

CVE-2025-66221

Werkzeug is a comprehensive WSGI web application library. Prior to version 3.1.4, Werkzeug's safejoin 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...

PT-2025-48363

Name of the Vulnerable Software and Affected Versions Werkzeug versions prior to 3.1.4 Description The safe join function in Werkzeug versions prior to 3.1.4 improperly handles path segments containing Windows device names. On Windows systems, special device names like CON and AUX are present in...

SUSE CVE-2024-49766

Werkzeug is a Web Server Gateway Interface web application library. On Python = 3.11, or not using Windows, are not vulnerable. Werkzeug version 3.0.6 contains a patch...

CVE-2024-49766

A flaw was found in Werkzeug. In Python versions below v3.11 on Windows, os.path.isabs does not catch UNC paths such as //server/share. Werkzeug's safejoin relies on this check and can produce a path that is not safe, which can allow unintended access to data...