CVE-2026-39813

Published Apr 14, 2026

Last updated 2 months ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-39813 is a path traversal vulnerability identified in Fortinet FortiSandbox. This flaw, specifically a '../filedir' path traversal, exists within the FortiSandbox JRPC API due to insufficient input validation. Exploitation of this vulnerability allows an unauthenticated attacker to bypass authentication and potentially escalate privileges on the system by sending specially crafted HTTP requests. The affected versions include FortiSandbox 4.4.0 through 4.4.8 and FortiSandbox 5.0.0 through 5.0.5.

Description
A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8 may allow attacker to escalation of privilege via <insert attack vector here>
Source
psirt@fortinet.com
NVD status
Analyzed
Products
fortisandbox

Risk scores

CVSS 3.1

Type
Secondary
Base score
9.8
Impact score
5.9
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity
CRITICAL

Weaknesses

psirt@fortinet.com
CWE-24

Social media

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score

5

Configurations

References

Sources include official advisories and independent security research.