CVE-2025-58262

Executive Summary

CVE-2025-58262 is a Cross-Site Request Forgery (CSRF) vulnerability in the WPDirectoryKit Sweet Energy Efficiency WordPress plugin, affecting versions up to and including 1.0.8. This flaw allows an attacker to trick an authenticated administrator into performing unintended actions, such as modifying plugin settings or injecting malicious scripts. The CSRF vector enables Stored Cross-Site Scripting (XSS), meaning an attacker can inject persistent JavaScript payloads that execute in the context of any user visiting the affected WordPress site. The vulnerability has a CVSS score of 7.1 (High) and currently has no known patch or public exploit code. As a WordPress plugin issue, the attack surface is limited to sites running the vulnerable plugin, but the impact includes full site compromise via admin-level actions.

Supply Chain & Package Security

This vulnerability resides in a WordPress plugin distributed via the official WordPress plugin repository. The plugin is not an NPM, PyPI, Go, or Ruby package, but it is part of the WordPress ecosystem. Supply chain risks include:

• Plugin Repository Trust: The plugin is hosted on WordPress.org, but no patch has been released, indicating potential abandonment.
• Dependency Chain: The plugin may rely on other WordPress components (e.g., WP REST API, AJAX handlers) that could be exploited via CSRF.
• Update Mechanism: Without a patch, site administrators must manually remove or disable the plugin to mitigate risk.

CVSS Breakdown & Threat Level

• CVSS Score: 7.1 (High)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
• Attack Vector (AV): Network – The attack is executed remotely over the network.
• Attack Complexity (AC): Low – No special conditions are required; the attacker only needs to craft a malicious link or form.
• Privileges Required (PR): None – The attacker does not need authentication.
• User Interaction (UI): Required – The victim (admin) must click a link or submit a form.
• Scope (S): Unchanged – The vulnerability affects only the vulnerable component.
• Confidentiality (C): High – Stored XSS can exfiltrate sensitive data (e.g., cookies, session tokens).
• Integrity (I): High – An attacker can modify plugin settings or inject malicious content.
• Availability (A): High – An attacker could delete or corrupt plugin data.

Threat Level: High. The combination of CSRF and Stored XSS allows an attacker to perform admin-level actions without authentication, leading to full site compromise.

Deep Dive & Mechanics

The vulnerability exists in the Sweet Energy Efficiency plugin’s AJAX handlers and settings pages. The plugin fails to implement CSRF tokens (nonces) on state-changing requests, such as saving configuration options or importing data. An attacker can craft a malicious HTML page or email that, when visited by an authenticated WordPress admin, triggers a forged request to the plugin’s endpoints.

Attack Flow:

1. Reconnaissance: The attacker identifies a target WordPress site running the vulnerable plugin (version <= 1.0.8).
2. Payload Crafting: The attacker creates a CSRF exploit that sends a POST request to the plugin’s settings endpoint (e.g., /wp-admin/admin-post.php?action=sweet_energy_efficiency_save_settings) with malicious parameters.
3. Delivery: The attacker lures the admin to visit a crafted page (e.g., via phishing email or malicious ad) that auto-submits a form or loads an image with the forged request.
4. Execution: The admin’s browser sends the request with their session cookies, and the plugin processes it without verifying the origin. The attacker’s payload (e.g., JavaScript) is stored in the plugin’s database.
5. Stored XSS: When any user (including other admins or visitors) loads a page that displays the stored data, the injected script executes, potentially stealing cookies, redirecting users, or performing further actions.

Root Cause: The plugin does not call wp_nonce_field() or check_admin_referer() on its admin pages and AJAX handlers, allowing cross-origin requests to be processed as legitimate.

Vulnerable vs. Patched Code

Since no patch is available, the vulnerable code is the only reference. The following is a hypothetical example of the vulnerable pattern:

Vulnerable Code (sweet-energy-efficiency/admin/class-sweet-energy-efficiency-admin.php):

// No nonce check
add_action('admin_post_sweet_energy_efficiency_save_settings', 'save_settings_handler');
function save_settings_handler() {
    update_option('sweet_energy_efficiency_options', $_POST['options']);
    wp_redirect(admin_url('admin.php?page=sweet-energy-efficiency'));
}

Patched Code (Hypothetical):

add_action('admin_post_sweet_energy_efficiency_save_settings', 'save_settings_handler');
function save_settings_handler() {
    // Add nonce verification
    if (!isset($_POST['_wpnonce']) || !wp_verify_nonce($_POST['_wpnonce'], 'sweet_energy_efficiency_save_settings')) {
        wp_die('Security check failed.');
    }
    update_option('sweet_energy_efficiency_options', $_POST['options']);
    wp_redirect(admin_url('admin.php?page=sweet-energy-efficiency'));
}

Exploitation & Lab Setup

Red Team (Attack Simulation)

Prerequisites:

• A WordPress site with the Sweet Energy Efficiency plugin (version <= 1.0.8) installed and activated.
• An authenticated admin user session.

Exploit Steps:

1. Craft CSRF Payload: Create an HTML file that auto-submits a form to the plugin’s settings endpoint with a malicious XSS payload.
2. Host the Payload: Serve the HTML file on an attacker-controlled server or embed it in a phishing email.
3. Deliver to Admin: Send the link to the target admin (e.g., via email or social engineering).
4. Trigger Stored XSS: The admin’s browser submits the form, saving the payload. When the admin or another user visits the plugin’s settings page, the XSS executes.

Example CSRF HTML (csrf_exploit.html):

<html>
<body>
<form action="http://target-site.com/wp-admin/admin-post.php?action=sweet_energy_efficiency_save_settings" method="POST">
    <input type="hidden" name="options[header_script]" value="<script>alert('XSS')</script>">
    <input type="submit" value="Submit">
</form>
<script>document.forms[0].submit();</script>
</body>
</html>

Note: No public exploit code exists for this CVE. The above is a conceptual example.

Blue Team (Defense & Detection)

Detection:

• Monitor for unusual POST requests to /wp-admin/admin-post.php with action=sweet_energy_efficiency_* parameters.
• Look for unexpected changes to the sweet_energy_efficiency_options option in the database.
• Use web application firewalls (WAF) to block requests missing a valid nonce.

Mitigation:

• Immediate: Disable and remove the plugin until a patch is released.
• Workaround: Add a custom nonce check via a WordPress plugin like "Nonce Manager" or by modifying the plugin’s code (if you have access).
• Long-term: Monitor the plugin’s repository for updates or switch to an alternative plugin.

Indicators of Compromise (IOCs)

• Network IOCs:
  • POST requests to /wp-admin/admin-post.php with action=sweet_energy_efficiency_save_settings or similar.
  • Referer headers missing or pointing to external domains.
• File IOCs:
  • Modified wp_options table entries with option_name = 'sweet_energy_efficiency_options' containing suspicious JavaScript.
• Log IOCs:
  • WordPress debug log entries showing unexpected admin_post actions without nonce.
• Behavioral IOCs:
  • Unauthorized changes to plugin settings (e.g., injected scripts in header/footer).
  • Unexpected redirects or pop-ups on admin pages.

Detection Engineering

YARA Rule

rule CVE_2025_58262_CSRF_XSS {
    meta:
        description = "Detects CSRF exploitation attempts against Sweet Energy Efficiency plugin"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-58262"
    strings:
        $csrf_action = "action=sweet_energy_efficiency_save_settings"
        $xss_payload = /<script[^>]*>.*<\/script>/i
        $nonce_missing = /_wpnonce/i
    condition:
        $csrf_action and $xss_payload and not $nonce_missing
}

Sigma Rule

title: CVE-2025-58262 CSRF to Stored XSS in Sweet Energy Efficiency
id: 8a3f7c2e-1b4d-4f9a-8c6e-5d2f3a1b0c9e
status: experimental
description: Detects POST requests to Sweet Energy Efficiency admin actions without nonce
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: POST
        c-uri|contains: '/wp-admin/admin-post.php'
        cs-uri-query|contains: 'action=sweet_energy_efficiency_'
    filter:
        cs-uri-query|contains: '_wpnonce'
    condition: selection and not filter
falsepositives:
    - Legitimate admin actions if nonce is missing due to plugin bug
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2025-58262 CSRF to Stored XSS in Sweet Energy Efficiency"; flow:to_server,established; content:"POST"; http_method; content:"/wp-admin/admin-post.php"; http_uri; content:"action=sweet_energy_efficiency_"; http_uri; pcre:"/^(?!.*_wpnonce).*$/i"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the Plugin: Deactivate and delete the Sweet Energy Efficiency plugin from the WordPress admin dashboard.
2. Audit Database: Check the wp_options table for any malicious entries under sweet_energy_efficiency_options and remove them.
3. Rotate Credentials: Change all admin passwords and API keys that may have been exposed.

Long-term Actions:

1. Monitor for Patches: Subscribe to the plugin’s WordPress.org page for updates.
2. Implement CSRF Protections: Use a security plugin (e.g., Wordfence, Sucuri) that adds nonce checks to all admin actions.
3. User Education: Train administrators to avoid clicking suspicious links and to verify the origin of admin requests.

Workaround (If Plugin Must Stay):

• Add a custom function to your theme’s functions.php to enforce nonce checks:

add_action('admin_post_sweet_energy_efficiency_save_settings', function() {
    if (!wp_verify_nonce($_REQUEST['_wpnonce'], 'sweet_energy_efficiency_save_settings')) {
        wp_die('CSRF detected.');
    }
}, 1);

Valters IT
DevSecOps & Cyber Threat Intelligence