What’s Vulnerable › Vulnerabilities
CVE-2021-36188
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-12-08 · updated 2026-06-17
- Weakness: CWE-79
Description
A improper neutralization of input during web page generation ('cross-site scripting') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows attacker to execute unauthorized code or commands via crafted GET parameters in requests to login and error handlers
Affected products
- Fortinet FortiWeb: from 6.0.0 through 6.2.5; from 6.3.0 before 6.3.16; from 6.4.0 before 6.4.2 — fixed in 6.3.16, 6.4.2
How to fix
Upgrade to a fixed version: Fortinet FortiWeb 6.3.16, 6.4.2. Check the vendor advisory for mitigations.
References
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