CVE-2021-23401

Katalog CVE

CVSS 6.1 · Medium EPSS 1,1%

Kerentanan URL Redirection to Untrusted Site ('Open Redirect') pada flask-user project flask-user. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

5 Juli 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

EPSS (30 hari)

1,1% peluang dieksploitasi; lebih tinggi dari 65,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/lingthio/Flask-User product · advisory pihak ketiga
• https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__utils.py exploit · advisory pihak ketiga
• https://snyk.io/vuln/SNYK-PYTHON-FLASKUSER-1293188 advisory pihak ketiga