py-flask-security -- user redirect to arbitrary URL vulnerability

Snyk reports:

This affects all versions of package Flask-Security.
When using the get_post_logout_redirect and get_post_login_redirect functions, it is possible to bypass URL validation and redirect a user to an arbitrary URL by providing multiple back slashes such as \\\evil.com/path.
This vulnerability is only exploitable if an alternative WSGI server other than Werkzeug is used, or the default behaviour of Werkzeug is modified using 'autocorrect_location_header=False.
Note: Flask-Security is not maintained anymore.