Open Redirection via Import CSV option

unknownCVE-2026-21741

CVSSv3 Score: 2.2 An URL Redirection to Untrusted Site ('Open Redirect') vulnerability [CWE-601] in FortiNAC-F may allow a remote privileged attacker with system administrator role to redirect users to an arbitrary website via crafted CSV file. Revised on 2026-04-14 00:00:00

CSIRTS triage

vendor: Fortinet product: FortiNAC-FOther

What: Remote privileged attackers may redirect users to arbitrary websites via crafted CSV files.
Who is affected: Privileged users of FortiNAC-F.
Urgency: Remediation is necessary to prevent phishing and other attacks.
Action: Implement validation for imported CSV files.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch FortiNAC-F

Get an email when a new FortiNAC-F advisory drops — max one per day, one-click unsubscribe.

Details

Source: Fortinet FortiGuard PSIRT (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-04-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://fortiguard.fortinet.com/psirt/FG-IR-26-118

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-217410.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-21741	coverage & exploitation status	NVD · CVE.org

Recent advisories for Open Redirection via

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-77028: Joomla Extension - yootheme.com - Reflected XSS and open redirect via the submission redirect …nvd · 2026-08-21
mediumCVE-2026-73671: Saurus CMS Community Edition contains an unauthenticated open redirect vulnerability in the lo…nvd · 2026-08-13
mediumGHSA-fjgc-3mj7-8rg8: ep_etherpad-lite: Cache-poisoning Cross-site Scripting and Open Redirect via x-proxy-path…ghsa · 2026-08-13
mediumCVE-2026-54770: WebOb: Open redirect in Location header normalization via leading C0 control / space character…msrc · 2026-08-11
unknownCVE-2026-54215: Tobit Laboratories AG TeamDavid's Webbox contains an open redirect vulnerability via the “repl…nvd · 2026-08-07
highCVE-2026-10545: IBM Planning Analytics Local 2.1.0 through 2.1.21 is vulnerable to an open redirect that allow…nvd · 2026-07-30