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CVE-2021-23401
Date: July 5, 2021
This affects all versions of package Flask-User. When using the make_safe_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 or \\\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.
Severity Score
Severity Score
Weakness Type (CWE)
URL Redirection to Untrusted Site ('Open Redirect')
CWE-601CVSS v3
| Base Score: |
|
|---|---|
| Attack Vector (AV): | |
| Attack Complexity (AC): | |
| Privileges Required (PR): | |
| User Interaction (UI): | |
| Scope (S): | |
| Confidentiality (C): | PARTIAL |
| Integrity (I): | PARTIAL |
| Availability (A): | PARTIAL |
CVSS v2
| Base Score: |
|
|---|---|
| Access Vector (AV): | |
| Access Complexity (AC): | |
| Authentication (AU): | |
| Confidentiality (C): | LOW |
| Integrity (I): | LOW |
| Availability (A): | NONE |
| Additional information: |