Security Advisory

CVE-2021-23401

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-07-05 10:25:11

Last updated 2024-09-16 17:15:15

Assigner snyk

State PUBLISHED

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.

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