Cross-site scripting in FortiSandbox - CVE-2025-54353
Published: December 9, 2025 / Updated: December 18, 2025
Vulnerability identifier: #VU119453
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2025-54353
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiSandbox
FortiSandbox
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to improper neutralization of input during web page generation ('cross-site scripting') in HA cluster. An attacker can perform an XSS attack via crafted HTTP requests.
How to mitigate CVE-2025-54353
Install update from vendor's website.