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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-23401 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/lingthio/Flask-User Product  Third Party Advisory 
https://github.com/lingthio/Flask-User Product  Third Party Advisory 
https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py Exploit  Third Party Advisory 
https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py Exploit  Third Party Advisory 
https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188 Third Party Advisory 
https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-601 URL Redirection to Untrusted Site ('Open Redirect') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-23401
NVD Published Date:
07/05/2021
NVD Last Modified:
11/21/2024
Source:
Snyk