CVE-2025-1508

Executive Summary

CVE-2025-1508 is a missing authorization vulnerability in the WP Crowdfunding plugin for WordPress, affecting all versions up to and including 2.1.14. The flaw resides in the download_data action, which lacks a capability check, allowing authenticated attackers with subscriber-level access or higher to download all site post content when WooCommerce is active. This leads to unauthorized data exposure, potentially leaking sensitive information such as draft posts, private pages, and customer order details. The CVSS score is 5.3 (Medium), and no public exploit code or patch is currently available. As a WordPress ecosystem issue, this vulnerability does not affect the underlying web server (Apache/Nginx) but directly impacts the plugin’s authorization logic.

Supply Chain & Package Security

This vulnerability is specific to the WP Crowdfunding plugin distributed via the WordPress plugin repository. No NPM, PyPI, Go, or Ruby packages are involved. The plugin is a PHP-based WordPress extension, and the risk is limited to sites where both WP Crowdfunding and WooCommerce are installed and activated.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – Exploitable remotely.
• Attack Complexity (AC): Low (L) – No special conditions required.
• Privileges Required (PR): Low (L) – Requires subscriber-level authentication.
• User Interaction (UI): None (N) – No user action needed.
• Scope (S): Unchanged (U) – Impact confined to the vulnerable component.
• Confidentiality (C): Low (L) – Limited data exposure (post content).
• Integrity (I): None (N) – No data modification.
• Availability (A): None (N) – No service disruption.

Threat Level: Medium. While the CVSS score is 5.3, the actual risk is elevated due to the potential leakage of sensitive WooCommerce data (e.g., order details, customer PII) and the ease of exploitation with low privileges.

Deep Dive & Mechanics

The vulnerability exists in the download_data action handler within the WP Crowdfunding plugin. This action is intended to allow administrators to export campaign data, but it fails to enforce proper authorization checks. The code likely uses wp_ajax_ hooks without verifying the user’s capability (e.g., manage_options or edit_posts). As a result, any authenticated user with subscriber-level access can trigger the export, which dumps all post content (including posts, pages, custom post types) from the WordPress database when WooCommerce is installed. The WooCommerce dependency is due to the plugin’s integration with WooCommerce for payment and order management, but the export function inadvertently includes all site content.

The attack flow:

1. Attacker authenticates as a subscriber (e.g., via registration or compromised credentials).
2. Attacker sends a crafted AJAX request to wp-admin/admin-ajax.php with action=download_data.
3. The server processes the request without checking if the user has the required capability.
4. The response contains a CSV or similar export of all post data, including private/draft content.

Vulnerable vs. Patched Code

Vulnerable Code (<= 2.1.14):

add_action('wp_ajax_download_data', 'wpcf_download_data');
function wpcf_download_data() {
    // No capability check
    $data = get_posts(array('post_type' => 'any', 'numberposts' => -1));
    // Output CSV...
}

Patched Code (Hypothetical):

add_action('wp_ajax_download_data', 'wpcf_download_data');
function wpcf_download_data() {
    if (!current_user_can('manage_options')) {
        wp_die('Unauthorized');
    }
    $data = get_posts(array('post_type' => 'any', 'numberposts' => -1));
    // Output CSV...
}

The fix requires adding a capability check (e.g., manage_options or edit_others_posts) before processing the export. Since no official patch exists, administrators must implement this manually or disable the plugin.

Exploitation & Lab Setup

Red Team (Exploitation)

Prerequisites:

• WordPress instance with WP Crowdfunding <= 2.1.14 and WooCommerce installed.
• Valid subscriber account credentials.

Exploit Steps:

1. Log in as a subscriber.
2. Obtain a nonce if required (check the plugin’s AJAX handler; if nonce is missing, skip this step).
3. Send a POST request to https://target.com/wp-admin/admin-ajax.php with the following parameters:
   • action=download_data
   • (Optional) Additional parameters like type=csv or nonce=... if needed.
4. The response will contain a CSV file with all post data.

Example cURL command:

curl -X POST https://target.com/wp-admin/admin-ajax.php \
  -c cookies.txt -b cookies.txt \
  -d "action=download_data" \
  -o leaked_data.csv

Note: No public exploit code exists; this is a manual exploitation guide.

Blue Team (Detection & Hardening)

Detection:

• Monitor AJAX requests to admin-ajax.php with action=download_data from non-admin users.
• Alert on unusual data export activity, especially from subscriber accounts.

Hardening:

• Apply a virtual patch using a Web Application Firewall (WAF) to block requests to admin-ajax.php with action=download_data from users without admin roles.
• Disable the WP Crowdfunding plugin until a patch is available.
• Implement a custom plugin or mu-plugin that adds a capability check to the download_data action.

Example WAF rule (ModSecurity):

SecRule ARGS:action "download_data" "id:1001,phase:2,deny,status:403,msg:'Blocked unauthorized data export attempt'"

Indicators of Compromise (IOCs)

• Network IOCs:
  • POST requests to /wp-admin/admin-ajax.php with action=download_data from low-privilege user agents.
  • Unusual outbound data transfers containing CSV files with post content.
• File IOCs:
  • Unexpected CSV files in the web root or temporary directories containing site content.
• Log IOCs:
  • WordPress debug logs showing wpcf_download_data function calls from subscriber roles.
  • Apache/Nginx access logs with POST /wp-admin/admin-ajax.php HTTP/1.1 and action=download_data in the request body.

Detection Engineering

YARA Rule

rule CVE_2025_1508_WP_Crowdfunding_Export {
    meta:
        description = "Detects exploitation attempts of CVE-2025-1508 in WP Crowdfunding plugin"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2025-1508"
    strings:
        $ajax_action = "action=download_data"
        $wp_admin = "wp-admin/admin-ajax.php"
    condition:
        $ajax_action and $wp_admin
}

Sigma Rule

title: CVE-2025-1508 WP Crowdfunding Unauthorized Data Export
id: 8a3f7c2e-5d1b-4a9f-8c6e-2b1a3d4f5e6c
status: experimental
description: Detects attempts to exploit missing authorization in WP Crowdfunding plugin
author: Valters IT
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query|contains: 'admin-ajax.php'
        cs-uri-query|contains: 'action=download_data'
    condition: selection
falsepositives:
    - Legitimate admin exports (rare)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2025-1508 WP Crowdfunding Unauthorized Data Export"; flow:to_server,established; content:"POST"; http_method; content:"/wp-admin/admin-ajax.php"; http_uri; content:"action=download_data"; http_client_body; classtype:attempted-recon; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the WP Crowdfunding plugin if WooCommerce is not required for crowdfunding operations.
2. Apply a virtual patch via WAF or server-level rules to block the vulnerable AJAX action for non-admin users.
3. Audit user accounts for any unauthorized subscriber-level access that may have been exploited.

Long-Term Fix:

• Monitor the plugin’s repository for an official patch. If none is released, consider forking the plugin and adding a capability check to the download_data function.
• Implement a custom plugin that hooks into wp_ajax_download_data and adds authorization:

  add_action('wp_ajax_download_data', 'custom_download_data_check', 1);
  function custom_download_data_check() {
      if (!current_user_can('manage_options')) {
          wp_die('Unauthorized');
      }
  }
  

Workaround:

• Restrict access to admin-ajax.php using .htaccess or Nginx config for non-admin IPs, but this may break legitimate AJAX functionality.

Valters IT