← Back

Flask Unchained

flask_unchained

Vendor: Flask Unchained Project • 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