CVE-2026-39812

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 al

Severity
Medium 4.3
CVSS 3.1
Exploited
Not listed
EPSS
0.002
9.3th percentile
Discovered by
Vendor
Vendor advisory field
Published
Apr 14, 2026
Assigned by fortinet

Description

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.5, FortiSandbox PaaS 4.4.0 through 4.4.8, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>

Weakness: CWE-79

Affected products

Vendor Product Category Matched by
Fortinet FortiSandbox Threat Detection & Sandbox cna-assigner
Vendor-reported products (2)
  • Fortinet · FortiSandbox
  • Fortinet · FortiSandbox PaaS

Credit

Internally discovered and reported by Adamya Varma from Fortinet InfoSec team.

Vendor remediation

Upgrade to FortiSandbox version 5.0.6 or above Upgrade to FortiSandbox version 4.4.9 or above Upgrade to FortiSandbox PaaS version 5.0.6 or above Upgrade to FortiSandbox PaaS version 4.4.9 or above

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