Solutions to the Flatt XSS challenge

Each will open in a new window. If all goes well you should see an alert pop up with the challenge origin. Tested on Chromium 127.0.6533.99

1. hamayanhamayan
2. ryotak (Note, it takes about 5 seconds after the page loads for exploit to run. Might be a little flaky on high latency connections, but if it doesn't work the first time it should work the second time)
3. kinugawamasato (note: This solution only works on chrome but not firefox.)