CVE-2021-23393
5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:U/RC:C
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | Flask-Unchained | unspecified < 0.9.0 | affected |
Weaknesses
- Open Redirect
ADP Enrichment
CVE Program Container
Additional References
- https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189
- https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40
References
- https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189
- https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40
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