Flask Unchained Project

flask_unchained_project

1 CVE • 1 product

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Flask Unchained

flask_unchained

1 CVE

CVEs (1)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2021-23393 1Flask Unchained Project 1Flask Unchained Jun 17, 2026 Jun 11, 2021 N/A· v4 5.4 MEDIUM· v3 5.8 MEDIUM· v2 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 slashe...Show more 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.Show less

CVE

VENDORS

PRODUCTS

UPDATED

PUBLISHED

CVSS

CVE-2021-23393

1Flask Unchained Project

1Flask Unchained

Jun 17, 2026

Jun 11, 2021

N/A· v4

5.4 MEDIUM· v3

5.8 MEDIUM· v2

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.Show less