Open Redirect Affecting flask-security package, versions [0,]


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.11% (46th percentile)

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  • Snyk IDSNYK-PYTHON-FLASKSECURITY-1293234
  • published18 May 2021
  • disclosed18 May 2021
  • creditNoam Moshe of Claroty

Introduced: 18 May 2021

CVE-2021-23385  (opens in a new tab)
CWE-601  (opens in a new tab)
First added by Snyk

How to fix?

There is no fixed version for Flask-Security.

Overview

Flask-Security is a Simple security for Flask apps.

Affected versions of this package are vulnerable to Open Redirect. 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.

CVSS Scores

version 3.1