Vulnerability Details CVE-2021-23393
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 42.4%
CVSS Severity
CVSS v3 Score 5.4
CVSS v2 Score 5.8
References
- https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40
- https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189
- https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40
- https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189
Products affected by CVE-2021-23393
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cpe:2.3:a:flask_unchained_project:flask_unchained:-
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.1.0
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.1.1
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.1.2
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.1.3
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.1.4
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.1.5
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.1.6
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.2.0
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.2.1
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.2.2
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.3.1
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.3.2
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.4.0
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.4.1
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.4.2
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.5.0
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.5.1
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.6.0
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.6.1
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.6.2
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.6.3
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.6.4
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.6.5
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.6.6
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.0
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.1
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.2
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.3
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.4
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.5
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.6
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.7
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.8
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.7.9
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.8.0
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cpe:2.3:a:flask_unchained_project:flask_unchained:0.8.1