In many services, email can be used to reset the password, or do something that is sensitive. Sensitive data is also quite often sent to you by email, e.g. long links that enable access to your account or similar.
+However for most people, their email service provider can read all their emails, can see what is being sent, and can send email themselves as "you". So doesn't that give your email service provider basically full access to your accounts? This seems like the incorrect medium to send such information via.
+I don't really know if this matters, however you never really see these email services sending you "encrypted" email with your pgp key.
+Also, it is well known that email is inherently insecure, or not designed with privacy or security in mind.
+However it keeps being used for these purposes.
+",248276,,143777,,1/4/2021 15:45,1/4/2021 15:45,Why is email often used as the ultimate verification?,I want to create a minimal example where JavaScript injection/XSS is working. This is my example server:
+ +const express = require("express");
+const path = require("path");
+
+const app = express();
+const port = 3000;
+
+app.get("/", (req, res) => {
+ res.sendFile(path.join(__dirname + "/index.html"));
+});
+
+app.get("/api/comments", (req, res) => {
+ res.json(["Comment A", "Comment B<script>console.log('Hello')</script>"]);
+});
+
+app.listen(port, () => {
+ console.log(`Example app listening at http://localhost:${port}`);
+});
+The browser should execute the script inside Comment B. This is my index.html:
+ +<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="UTF-8" />
+ </head>
+ <body>
+ <h1>Comments</h1>
+ <ul id="comments"></ul>
+ <script>
+ fetch("http://localhost:3000/api/comments")
+ .then((response) => response.json())
+ .then((data) => renderComments(data));
+
+ function renderComments(comments) {
+ let commentHTML = "";
+ for (const comment of comments) {
+ commentHTML += `<li>${comment}</li>`;
+ }
+ document.getElementById("comments").innerHTML = commentHTML;
+ }
+ </script>
+ </body>
+</html>
+I can see the script tag with the inspector in the browser however it isn't executed. Nothing is logged into the console. It doesn't work either with alert or fetch. What is missing to get the browser to execute the script inside the comment?
+