CVE-2021-22122: Fortinet FortiWeb

Medium severity, CVSS 6.1. EPSS: 10.5% chance of exploitation in the next 30 days.

An improper neutralization of input during web page generation in FortiWeb GUI interface 6.3.0 through 6.3.7 and version before 6.2.4 may allow an unauthenticated, remote attacker to perform a reflected cross site scripting attack (XSS) by injecting malicious payload in different vulnerable API end-points.

Affected products

• Fortinet FortiWeb: up to and including 6.2.3; from 6.3.0, up to and including 6.3.7

Published 2021-02-08. Last modified 2026-06-17.