Description
This affects the package Flask-Unchained before 0.9.0. When using the the _validate_redirect_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. 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-Unchained | unspecified – < 0.9.0 | 0.9.0 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | flask-unchained | < 0.9.0 | 0.9.0 | GHSA-pjc4-3w99-j7v4 |