CVE-2025-57961

Executive Summary

CVE-2025-57961 is a Missing Authorization vulnerability in the CoDesigner (WooLementor) WordPress plugin by Codexpert, Inc. This flaw allows unauthenticated attackers to exploit incorrectly configured access control security levels, potentially leading to unauthorized data access or privilege escalation. The vulnerability affects all versions up to and including 4.29. With a CVSS score of 4.3 (Medium), the risk is elevated due to the lack of required authentication and the widespread use of WordPress plugins. No public proof-of-concept (PoC) or patch details are currently available, but the vulnerability is classified under CWE-862 (Missing Authorization).

Supply Chain & Package Security

This vulnerability resides in a WordPress plugin ecosystem, not in a package manager like NPM or PyPI. However, the plugin is distributed via the WordPress plugin repository and can be installed automatically on millions of sites. Supply chain risk is moderate: if the plugin is compromised or not updated, attackers can exploit this flaw to gain unauthorized access to WooCommerce data, customer information, or administrative functions.

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 (AV:N) – exploitable remotely.
• Attack Complexity: Low (AC:L) – no special conditions required.
• Privileges Required: None (PR:N) – no authentication needed.
• User Interaction: None (UI:N) – no user action required.
• Scope: Unchanged (S:U) – impact confined to the vulnerable component.
• Confidentiality Impact: Low (C:L) – limited data exposure.
• Integrity Impact: None (I:N) – no data modification.
• Availability Impact: None (A:N) – no denial of service.

Threat Level: Medium. The vulnerability is easy to exploit remotely without authentication, but the impact is limited to low confidentiality loss. However, in a WordPress context, this could expose sensitive WooCommerce data (e.g., order details, customer PII).

Deep Dive & Mechanics

The vulnerability lies in the CoDesigner plugin’s access control mechanisms. The plugin likely exposes REST API endpoints or AJAX actions that fail to properly verify user capabilities before processing requests. Specifically, functions that handle product data, order management, or settings may be accessible to unauthenticated users.

Root Cause: The plugin uses wp_ajax_nopriv_* hooks or lacks current_user_can() checks in critical functions. For example, a function like get_products() might be registered with both wp_ajax_* and wp_ajax_nopriv_*, allowing anyone to call it without authentication.

Attack Vector: An attacker sends crafted HTTP requests to the WordPress site’s REST API or AJAX endpoints, bypassing authorization checks. This could allow enumeration of WooCommerce products, orders, or customer data.

Impact: Unauthorized access to sensitive data, potential for further exploitation if combined with other vulnerabilities (e.g., stored XSS via product data).

Vulnerable vs. Patched Code

Since no patch is available, we analyze the likely vulnerable pattern:

Vulnerable Code (Hypothetical):

add_action( 'wp_ajax_nopriv_get_products', 'cd_get_products' );
function cd_get_products() {
    $products = wc_get_products( array( 'limit' => -1 ) );
    wp_send_json( $products );
}

Patched Code (Expected):

add_action( 'wp_ajax_get_products', 'cd_get_products' );
add_action( 'wp_ajax_nopriv_get_products', 'cd_get_products_noauth' );
function cd_get_products() {
    if ( ! current_user_can( 'edit_products' ) ) {
        wp_die( 'Unauthorized' );
    }
    $products = wc_get_products( array( 'limit' => -1 ) );
    wp_send_json( $products );
}
function cd_get_products_noauth() {
    wp_die( 'Unauthorized' );
}

The fix involves removing the nopriv hook for sensitive actions or adding capability checks.

Exploitation & Lab Setup

Red Team (Attacker)

Prerequisites:

• Target WordPress site with CoDesigner plugin <= 4.29.
• WooCommerce active (likely).

Exploitation Steps:

1. Identify vulnerable endpoints (e.g., /wp-admin/admin-ajax.php?action=cd_get_products).
2. Send a GET/POST request without authentication:

   curl -X GET "http://target.com/wp-admin/admin-ajax.php?action=cd_get_products"
   

3. If successful, the response contains JSON data (e.g., product list, orders).

Automated Exploit (Python):

import requests

target = "http://target.com/wp-admin/admin-ajax.php"
params = {"action": "cd_get_products"}
response = requests.get(target, params=params)
if response.status_code == 200:
    print(response.json())

Blue Team (Defender)

Detection:

• Monitor for unusual AJAX requests to admin-ajax.php with action parameters not requiring authentication.
• Look for spikes in requests from single IPs to WooCommerce-related endpoints.

Hunting:

• Search logs for wp_ajax_nopriv_* actions that should be authenticated.
• Use WAF rules to block requests to admin-ajax.php with suspicious actions.

Indicators of Compromise (IOCs)

• Network:
  • HTTP requests to /wp-admin/admin-ajax.php with action=cd_* parameters.
  • Unusual JSON responses containing WooCommerce data (e.g., product IDs, order details).
• File:
  • Modified plugin files in /wp-content/plugins/woolementor/ (if attacker uploads backdoor).
• Log:
  • Repeated 200 responses to admin-ajax.php from unauthenticated users.

Detection Engineering

YARA Rule

rule CVE_2025_57961_CoDesigner_Missing_Auth {
    meta:
        description = "Detects vulnerable CoDesigner plugin files with missing authorization"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-57961"
    strings:
        $nopriv = "wp_ajax_nopriv_" nocase
        $auth_check = "current_user_can" nocase
    condition:
        $nopriv and not $auth_check
}

Sigma Rule

title: CVE-2025-57961 - CoDesigner Missing Authorization
id: 8a4b3c2d-1e5f-4a7b-9c8d-0e1f2a3b4c5d
status: experimental
description: Detects unauthenticated AJAX requests to CoDesigner endpoints
author: Valters IT
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'GET'
        cs-uri-query|contains: 'admin-ajax.php?action=cd_'
    condition: selection
falsepositives:
    - Legitimate admin actions (rare)
level: medium

Suricata Rule

alert http any any -> $HOME_NET any (
    msg:"CVE-2025-57961 - CoDesigner Missing Authorization Attempt";
    flow:to_server,established;
    content:"GET"; http_method;
    content:"admin-ajax.php"; http_uri;
    content:"action=cd_"; http_uri;
    classtype:attempted-recon;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin until a patch is released.
2. Implement a Web Application Firewall (WAF) rule to block requests to admin-ajax.php with action parameters starting with cd_ from unauthenticated users.
3. Monitor logs for exploitation attempts.

Long-term Fix:

• Apply the vendor patch when available (check Codexpert, Inc. updates).
• If no patch, manually add capability checks to the plugin’s AJAX handlers (see patched code example).

Workaround:

• Use a security plugin (e.g., Wordfence) to enforce authentication on AJAX actions.

Valters IT