CVE-2025-31046

Executive Summary

CVE-2025-31046 is a Missing Authorization vulnerability in the WordPress plugin AnyWhere Elementor Pro by WPvibes. This flaw allows an unauthenticated attacker to exploit incorrectly configured access control security levels, potentially leading to unauthorized data exposure or limited manipulation of the plugin's functionality. The vulnerability affects all versions up to and including 2.29. As a WordPress plugin vulnerability, it is part of the broader WordPress ecosystem and should be assessed within that context.

The CVSS score is 4.3 (Medium), with a low attack complexity and no privileges required. The EPSS score is 0.0%, indicating a very low probability of exploitation in the wild at this time. No public proof-of-concept (PoC) or exploit code is available, and no patch has been released by the vendor.

Supply Chain & Package Security

This vulnerability is specific to the WordPress plugin ecosystem. The plugin is distributed via the WordPress plugin repository and third-party marketplaces. Users should verify the integrity of their plugin files and ensure they are sourced from trusted channels. No known supply chain compromise has been reported.

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: 4.3 (Medium)
• Attack Vector: Network
• Attack Complexity: Low
• Privileges Required: None
• User Interaction: None
• Scope: Unchanged
• Confidentiality Impact: Low
• Integrity Impact: None
• Availability Impact: None

The threat level is Medium due to the low complexity and no required privileges, but the impact is limited to low confidentiality loss. The lack of a public PoC and low EPSS score reduces immediate risk, but the absence of a patch increases long-term exposure.

Deep Dive & Mechanics

The vulnerability resides in the AnyWhere Elementor Pro plugin, which extends the Elementor page builder for WordPress. The plugin likely implements custom AJAX handlers or REST API endpoints to manage content or settings. The missing authorization check means that these endpoints do not properly verify user capabilities (e.g., edit_posts, manage_options) before processing requests.

An unauthenticated attacker can send crafted HTTP requests to these endpoints, potentially:

• Retrieving sensitive configuration data (e.g., API keys, nonces, or internal paths).
• Modifying plugin settings or content if the endpoint allows write operations (though integrity impact is listed as None, this may be a limitation of the CVSS scoring).

The vulnerability is classified under CWE-862: Missing Authorization, which occurs when a product does not perform an authorization check when accessing a resource or performing an action.

Vulnerable vs. Patched Code

Since no patch is available, a direct code comparison cannot be provided. However, based on the vulnerability type, the vulnerable code likely resembles:

// Vulnerable: No capability check
add_action('wp_ajax_nopriv_my_action', 'handle_request');
function handle_request() {
    // Process request without checking user permissions
    $data = get_option('my_plugin_settings');
    wp_send_json_success($data);
}

A patched version would include an authorization check:

// Patched: Capability check added
add_action('wp_ajax_nopriv_my_action', 'handle_request');
function handle_request() {
    if (!current_user_can('manage_options')) {
        wp_die('Unauthorized', 403);
    }
    $data = get_option('my_plugin_settings');
    wp_send_json_success($data);
}

Exploitation & Lab Setup

Red Team

Since no public exploit code is available, a red team would need to perform manual analysis. Steps include:

1. Identify vulnerable endpoints: Use a proxy (e.g., Burp Suite) to intercept AJAX requests from the plugin's frontend.
2. Fuzz for missing authorization: Send requests to identified endpoints without authentication tokens or cookies.
3. Craft exploit: If an endpoint returns sensitive data or allows modifications, craft a simple HTTP request.

Example curl command to test for unauthorized access:

curl -X POST "http://target.com/wp-admin/admin-ajax.php" \
  -d "action=anywhere_elementor_pro_get_settings" \
  -H "Content-Type: application/x-www-form-urlencoded"

Blue Team

To detect exploitation attempts:

1. Monitor logs: Look for repeated requests to admin-ajax.php with unknown or suspicious action parameters.
2. Check for unauthenticated access: Alert on any access to plugin-specific AJAX actions without a valid WordPress nonce or authentication cookie.
3. Harden the plugin: If possible, disable the plugin until a patch is available, or implement a Web Application Firewall (WAF) rule to block requests to known vulnerable endpoints.

Indicators of Compromise (IOCs)

• File paths: /wp-content/plugins/anywhere-elementor-pro/
• AJAX actions: Any action prefixed with anywhere_elementor_pro_ (e.g., anywhere_elementor_pro_get_settings, anywhere_elementor_pro_save_data)
• HTTP requests: POST requests to /wp-admin/admin-ajax.php with action parameter containing anywhere_elementor_pro_ and no _wpnonce or authentication cookie.
• Log entries: WordPress debug log entries showing wp_ajax_nopriv_* hooks being triggered without authentication.

Detection Engineering

YARA Rule

rule Detect_AnyWhere_Elementor_Pro_Vulnerable {
    meta:
        description = "Detects vulnerable versions of AnyWhere Elementor Pro plugin"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-31046"
    strings:
        $plugin_header = "Plugin Name: AnyWhere Elementor Pro"
        $version_string = "Version: 2.29" nocase
    condition:
        $plugin_header and $version_string
}

Sigma Rule

title: Unauthenticated Access to AnyWhere Elementor Pro AJAX Endpoints
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects unauthenticated POST requests to admin-ajax.php with AnyWhere Elementor Pro actions
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-method: POST
        cs-uri-query|contains: admin-ajax.php
        cs-uri-query|contains: action=anywhere_elementor_pro_
    condition: selection
falsepositives:
    - Legitimate plugin functionality if accessed by authenticated users (but Sigma rule may miss cookies)
level: medium

Suricata Rule

alert http any any -> $HOME_NET any (
    msg:"CVE-2025-31046 - Unauthenticated AnyWhere Elementor Pro AJAX Access";
    flow:to_server,established;
    content:"POST"; http_method;
    content:"admin-ajax.php"; http_uri;
    content:"action=anywhere_elementor_pro_"; http_client_body;
    classtype:attempted-recon;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

1. Immediate: Disable the AnyWhere Elementor Pro plugin until a patch is released.
2. Short-term: Implement a Web Application Firewall (WAF) rule to block requests to admin-ajax.php with action parameters containing anywhere_elementor_pro_ unless accompanied by a valid nonce.
3. Long-term: Monitor the WPvibes website or WordPress plugin repository for a patched version (e.g., 2.30 or higher). Apply the update as soon as it becomes available.
4. General: Regularly audit WordPress plugins for known vulnerabilities and remove unused plugins.

Valters IT
Securing Digital Frontiers