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Open Redirect EUVDEUVD-2026-22313

| CVE-2026-21741 LOW
URL Redirection to Untrusted Site (Open Redirect) (CWE-601)
2026-04-14 fortinet GHSA-9fmp-fvvg-6vr2
2.4
CVSS 3.1 · NVD

Severity by source

NVD PRIMARY
2.4 LOW
AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

5
Analysis Generated
Apr 14, 2026 - 17:05 vuln.today
CVSS changed
Apr 14, 2026 - 16:22 NVD
2.2 (LOW) 2.4 (LOW)
EUVD ID Assigned
Apr 14, 2026 - 16:00 euvd
EUVD-2026-22313
Analysis Generated
Apr 14, 2026 - 16:00 vuln.today
CVE Published
Apr 14, 2026 - 15:39 nvd
LOW 2.4

DescriptionCVE.org

An URL Redirection to Untrusted Site ('Open Redirect') vulnerability [CWE-601] vulnerability in Fortinet FortiNAC-F 7.6.0 through 7.6.5, FortiNAC-F 7.4 all versions, FortiNAC-F 7.2 all versions may allow a remote privileged attacker with system administrator role to redirect users to an arbitrary website via crafted CSV file.

AnalysisAI

Open redirect vulnerability in Fortinet FortiNAC-F allows authenticated system administrators to redirect users to arbitrary websites through crafted CSV file uploads. Affects FortiNAC-F 7.6.0-7.6.5, all 7.4.x, and all 7.2.x versions. The attack requires high privilege level (system administrator role) and user interaction (UI:R), resulting in low real-world impact despite network-accessible attack vector. No public exploit code or active exploitation confirmed.

Technical ContextAI

CWE-601 (URL Redirection to Untrusted Site) describes improper handling of URL parameters or data sources without validation against a whitelist of trusted destinations. In FortiNAC-F, the vulnerability exists in CSV file processing functionality where administrator-supplied CSV data is used to construct redirect URLs without sanitization. The affected product is Fortinet's Network Access Control appliance (FortiNAC-F), a network security solution responsible for device visibility and access control. CPE cpe:2.3:a:fortinet:fortinac-f identifies all versions of this product line. The vulnerability manifests when FortiNAC-F processes a malicious CSV file containing arbitrary URLs, which are then presented to end users without validation, allowing redirection to attacker-controlled sites.

RemediationAI

Upgrade FortiNAC-F to patched versions: 7.6.6 or later for the 7.6 branch, or apply updates per Fortinet's advisory for 7.4 and 7.2 branches. Fortinet's advisory at https://fortiguard.fortinet.com/psirt/FG-IR-26-118 contains specific patched versions for each affected release stream. As an interim control, restrict CSV file upload and processing functionality to trusted administrators only, and educate system administrators about the risks of processing untrusted CSV files that may be used in social engineering attacks against end users.

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EUVD-2026-22313 vulnerability details – vuln.today

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