Medium4.3Fortinet Updated
Multiple Stored XSS
FG-IR-26-110 Published Apr 14, 2026Updated by vendor Apr 14, 2026
CVE-2026-39812
Affected products & platforms
FortinetFortiSandbox
Summary
CVSSv3 Score: 4.3 An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiSandbox and FortiSandbox Cloud may allow a privileged attacker to perform a stored XSS attack via crafted HTTP requests. Revised on 2026-04-14 00:00:00
Affected versions
- FortiSandbox 5.0: 5.0.0 through 5.0.5
- FortiSandbox 4.4: 4.4.0 through 4.4.8
- FortiSandbox 4.2: 4.2 all versions
- FortiSandbox PaaS 5.0: 5.0.0 through 5.0.5
- FortiSandbox PaaS 4.4: 4.4.0 through 4.4.8
- FortiSandbox PaaS 4.2: 4.2 all versions
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- FortiSandbox 5.0: 5.0.6
- FortiSandbox 4.4: 4.4.9
- FortiSandbox 4.2: migrate to a fixed release
- FortiSandbox PaaS 5.0: 5.0.6
- FortiSandbox PaaS 4.4: 4.4.9
- FortiSandbox PaaS 4.2: migrate to a fixed release
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Upgrade per the Affected/Solution table: FortiSandbox 5.0: 5.0.6; FortiSandbox 4.4: 4.4.9; FortiSandbox 4.2: migrate to a fixed release; FortiSandbox PaaS 5.0: 5.0.6; FortiSandbox PaaS 4.4: 4.4.9; ….
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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