CVE-2021-23393 – flask-unchained

Package

Manager: pip
Name: flask-unchained
Vulnerable Version: >=0 <0.9.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.002 pctl0.42221

Details

Open redirect in Flask-Unchained 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.

Metadata

Created: 2021-06-15T15:56:59Z
Modified: 2024-09-20T20:01:50Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/06/GHSA-pjc4-3w99-j7v4/GHSA-pjc4-3w99-j7v4.json
CWE IDs: ["CWE-601"]
Alternative ID: GHSA-pjc4-3w99-j7v4
Finding: F156
Auto approve: 1