Description
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.
References
https://github.com/mattupstate/flask-security
https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234
https://snyk.io/blog/url-confusion-vulnerabilities/
CVSS impact metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1 · Medium
CVSS V3.1
CVSS V3.0
CVSS V2.0
Information
Source identifier
Vulnerability status
Modified
Published
2022-08-02T14:15:10.017
2 years agoLast modified
2023-08-28T19:15:07.507
1 year ago