CVE-2026-39813

unknowncovered by 1 sourcefirst seen 2026-04-14

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

CSIRTS triage

What: An unauthenticated attacker can bypass authentication and escalate privileges via crafted HTTP requests.
Who is affected: Deployments of FortiSandbox.
Urgency: This critical vulnerability requires immediate remediation to prevent unauthorized access and privilege escalation.
Action: Update FortiSandbox to the latest version to mitigate this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Elevated exploitation risk16.7% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 97% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownUnauthenticated Authentication bypass and Privilege escalation in FortiSandboxfortinet · 2026-04-14

External references

NVD record for CVE-2026-39813

CVE.org record

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