PYSEC-2021-96

    Dashboard / Vulnerabilities / PYSEC-2021-96

    PYSEC-2021-96

    Published: 11 Jun 2021Last Modified: 8 Nov 2023

    Summary:

    Details: 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.

    References: https://snyk.io/vuln/SNYK-PYTHON-FLASKUNCHAINED-1293189, https://github.com/briancappello/flask-unchained/commit/71e36b28166f9ffbe0a991f51127f0984f7e6a40, https://github.com/advisories/GHSA-pjc4-3w99-j7v4

    Affected packages

    Package

    Name: flask-unchained

    Purl: pkg:pypi/flask-unchained

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -71e36b28166f9ffbe0a991f51127f0984f7e6a40

    Affected versions

    0.1.2
    0.1.3
    0.1.4
    0.1.5
    0.1.6

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2021-96 | CVE-DB