Description
This affects the package Flask-Unchained before 0.9.0. When using the the _validate_redirect_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. 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: 2021-06-10
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-2021-0088 This affects the package Flask-Unchained before 0.9.0. When using the the _validate_redirect_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. 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-pjc4-3w99-j7v4 Open redirect in Flask-Unchained
History

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Subscriptions

Flask Unchained Project Flask Unchained
cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2024-09-16T17:18:13.774Z

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

Link: CVE-2021-23393

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-06-11T00:15:09.273

Modified: 2024-11-21T05:51:38.153

Link: CVE-2021-23393

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses