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Flask-User@1.0.2.2 vulnerabilities

Customizable User Authentication & User Management: Register, Confirm, Login, Change username/password, Forgot password and more.

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Direct Vulnerabilities

Known vulnerabilities in the Flask-User package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • M
Open Redirect

Flask-User is a Customizable User Authorization & User Management: Register, Confirm, Login, Change username/password, Forgot password and more.

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

How to fix Open Redirect?

There is no fixed version for Flask-User.

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