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CVE-2021-36191 Details

Description

A url redirection to untrusted site ('open redirect') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows attacker to use the device as proxy via crafted GET parameters in requests to error handlers

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:4.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://fortiguard.com/advisory/FG-IR-21-133	CVE	PatchVendor Advisory
https://fortiguard.com/advisory/FG-IR-21-133	[email protected]	PatchVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-601	URL Redirection to Untrusted Site ('Open Redirect')	[email protected]

Affected Products

Product	Versions
fortinet fortiweb	>= 6.0.0, <= 6.0.7 >= 6.2.0, <= 6.2.6 >= 6.3.0, <= 6.3.15 6.1.0 6.1.1
CPE cpe:2.3:a:fortinet:fortiweb:::::::: cpe:2.3:a:fortinet:fortiweb:6.1.0:::::::* cpe:2.3:a:fortinet:fortiweb:6.1.1:::::::* cpe:2.3:a:fortinet:fortiweb:6.1.2:::::::* cpe:2.3:a:fortinet:fortiweb:6.4.0:::::::* cpe:2.3:a:fortinet:fortiweb:6.4.1:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 15, 2021	Reanalysis	[email protected]
Dec 9, 2021	Initial Analysis	[email protected]