Source: flask-security
X-Debbugs-CC: t...@security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerability was published for flask-security.

CVE-2021-23385[0]:
| This affects all versions of package Flask-Security. 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.

https://security.snyk.io/vuln/SNYK-PYTHON-FLASKSECURITY-1293234

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-23385
    https://www.cve.org/CVERecord?id=CVE-2021-23385

Please adjust the affected versions in the BTS as needed.

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