Critical9.1Fortinet Updated
Unauthenticated Authentication bypass and Privilege escalation in FortiSandbox
FG-IR-26-112 Published Apr 14, 2026Updated by vendor Apr 14, 2026
CVE-2026-39813
Affected products & platforms
FortinetFortiSandbox
Summary
CVSSv3 Score: 9.1 A Path Traversal vulnerability [CWE-24] in FortiSandbox JRPC API may allow an unauthenticated attacker to bypass authentication via specially 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
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
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.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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