CVE-2020-28724 : Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the

Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.

Published 2020-11-18 15:15:13

Updated 2020-12-01 16:05:21

Source MITRE

View at NVD, CVE.org

Vulnerability category: Open redirect

Products affected by CVE-2020-28724

Palletsprojects » Werkzeug
Versions before (<) 0.11.6
cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.11%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 44 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:N	8.6	4.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	2.8	2.7	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None

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

The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Assigned by: nvd@nist.gov (Primary)

https://github.com/pallets/werkzeug/issues/822

dev server sets wrong HTTP_HOST when path starts with a double slash · Issue #822 · pallets/werkzeug · GitHub
Issue Tracking;Third Party Advisory
https://github.com/pallets/werkzeug/pull/890/files

serving: absolute request URLs need a scheme by untitaker · Pull Request #890 · pallets/werkzeug · GitHub
Patch;Third Party Advisory
https://github.com/pallets/flask/issues/1639

Dev server redirects to arbitrary url when path starts with double slash // · Issue #1639 · pallets/flask · GitHub
Exploit;Issue Tracking;Third Party Advisory

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