En bref
- CVE-2021-23393 est une vulnérabilité MOYENNE (CVSS 5.4) touchant flask-unchained, flask unchained (flask unchained project).
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.72%, plus élevée que 54.0% des vulnérabilités.
- Correctif : mettre à jour vers 0.9.0 ou plus récent.
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.
NVD 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.
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