Open Redirect Affecting flask-security-too package, versions [0,4.1.0)
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.1% (42nd
percentile)
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-PYTHON-FLASKSECURITYTOO-1293190
- published 18 May 2021
- disclosed 18 May 2021
- credit Noam Moshe of Claroty
Introduced: 18 May 2021
CVE-2021-32618 Open this link in a new tabHow to fix?
Upgrade Flask-Security-Too to version 4.1.0 or higher.
Overview
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`.