CVE Database›Document archive›CVE-2020-28724

CVE-2020-28724

python-werkzeug: open redirect via double slash in the URL

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Severity

Moderate

Red Hat Product Security

5.4

CVSS 3.1

Review impact separately from score.

Published · December 6, 2015

Updated · November 1, 2026

Description

An open redirect flaw was found in the WSGI library python-werkzeug. When URL_PATH starts with a double slash, followed by an arbitrary URL without a scheme, python-werkzeug could redirect applications to that arbitrary URL. This flaw allows an attacker to use this technique to redirect victims to phishing websites controlled by an attacker or to use this flaw to chain vulnerabilities.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CWE-601 · URL Redirection to Untrusted Site