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.
Published: 2021-07-05
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-0089 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.
Github GHSA Github GHSA GHSA-4298-89hc-6rfv Open Redirect in Flask-User
History

No history.

Subscriptions

Flask-user Project Flask-user
cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2024-09-16T17:15:15.113Z

Reserved: 2021-01-08T00:00:00.000Z

Link: CVE-2021-23401

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-07-05T11:15:07.670

Modified: 2024-11-21T05:51:39.050

Link: CVE-2021-23401

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses