Critical [CVE-2026-39813] Unauthenticated Authentication bypass and Privilege escalation in FortiSandbox
This critical-severity Fortinet advisory covers CVE-2026-39813 affecting FortiSandbox.
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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
- 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 2 months ago·verify at source
- FortiSandbox 5.0: 5.0.6
- FortiSandbox 4.4: 4.4.9
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Upgrade per the Affected/Solution table: FortiSandbox 5.0: 5.0.6; FortiSandbox 4.4: 4.4.9.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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