Description
This affects all versions of package Flask-User. When using the make_safe_url function, 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 or \\\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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Flask-User | < unspecified | unspecified |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | flask-user | <= 1.0.2.2 | — | GHSA-4298-89hc-6rfv |
| PyPI | flask-user | all versions | — | PYSEC-2021-337 |