Reflected Cross-Site Scripting Vulnerability in FortiOS and FortiProxy
CVE-2025-31366

4.5MEDIUM

Key Information:

Vendor

Fortinet
Status
FortiOS
Fortiproxy
Vendor
CVE Published:
14 October 2025

What is CVE-2025-31366?

A vulnerability in FortiOS and FortiProxy allows unauthenticated attackers to execute reflected cross-site scripting (XSS) by sending specially crafted HTTP requests, potentially compromising user data and gaining unauthorized access to sensitive information. The issue affects multiple versions of FortiOS and FortiProxy, making it imperative for users to apply necessary patches to mitigate the risk.

Affected Version(s)

FortiOS 7.6.0 <= 7.6.2

FortiOS 7.4.0 <= 7.4.7

FortiOS 7.2.0 <= 7.2.12

References

https://fortiguard.fortinet.com/psirt/FG-IR-24-542

CVSS V3.1

Score:
4.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-31366 : Reflected Cross-Site Scripting Vulnerability in FortiOS and FortiProxy