CVE-2026-39813

Critical

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 specially crafted HTTP requests.

SeverityCritical

CVSS9.8

Exploit probability—

Product

Fortinet Fortisandbox

PublishedApr 14, 2026

First seenApr 14, 2026

Weakness typeCWE-24CWE-24

How to fix

Update

fortinet fortisandbox4.4.9, 5.0.6 or later

Vendor advisories

fortiguard.fortinet.com/psirt/FG-IR-26-112

Affected products

Product	Affected versions	Fixed in
fortinet fortisandbox	4.4.0 ≤ v < 4.4.9, 5.0.0 ≤ v < 5.0.6	4.4.9, 5.0.6

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