FortiSandbox
CVE-2026-39812: Cross-site scripting in FortiSandbox, FortiSandbox PaaS
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>
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| FortiSandbox 5.0.0 to 5.0.4 | 5.0.6 or later |
| FortiSandbox 4.4.0 to 4.4.8 | 4.4.9 or later |
| FortiSandbox 4.2.1 to 4.2.8 | Upgrade past 4.2.8; see the advisory |
| FortiSandbox PaaS 5.0.0 to 5.0.5 | 5.0.6 or later |
| FortiSandbox PaaS 4.4.0 to 4.4.8 | 4.4.9 or later |
| FortiSandbox PaaS 4.2.1 to 4.2.8 | Upgrade past 4.2.8; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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>
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.