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›vulnerability›CVE-2021-23401
Name
CVE-2021-23401
Source
NVD ( link)Debian ( link)
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.
CWEs
CWE-601
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/lingthio/Flask-UserProduct
https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.pyExploit
https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188Third Party Advisory
https://github.com/lingthio/Flask-UserProduct
https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.pyExploit
https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188Third Party Advisory

Analysis#

Affected Component
Analysis
python3-flask-user
Exploitable

Vulnerability Ratings#

5.4
CVSSv31
6.1
CVSSv31
5.8
CVSSv2