Information Exposure Affecting webpack-dev-server package, versions <3.1.11


0.0
high

Snyk CVSS

    Exploit Maturity Proof of concept
    Attack Complexity Low
    Confidentiality High
Expand this section
NVD
7.5 high

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  • Snyk ID SNYK-JS-WEBPACKDEVSERVER-72405
  • published 26 Sep 2018
  • disclosed 24 Jul 2018
  • credit chromium1337

How to fix?

Upgrade webpack-dev-server to version 3.1.11 or higher.

Overview

webpack-dev-server Uses webpack with a development server that provides live reloading. It should be used for development only.

Affected versions of this package are vulnerable to Information Exposure. The origin of requests is not checked by the WebSocket server, which is used for HMR. A malicious user could receive the HMR message sent by the WebSocket server via a ws://127.0.0.1:8080/ connection from any origin.