AIKIDO-2025-10649
webpack-dev-server is vulnerable to Origin Validation Error
45
Medium Risk
This Affects:
webpack-dev-serverTL;DR
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 you access a malicious web site with non-Chromium based browser. The Origin header is checked to prevent Cross-site WebSocket hijacking from happening, which was reported by CVE-2018-14732. But webpack-dev-server always allows IP address Origin headers. This allows websites that are served on IP addresses to connect WebSocket. An attacker can obtain source code via a method similar to that used to exploit CVE-2018-14732. Version 5.2.1 contains a patch for the issue.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
webpack-dev-server is vulnerable to Origin Validation Error in versions 0.0.1 - 5.2.0.
How to fix this
Upgrade the webpack-dev-server library to the patch version.
Links
GitHub Release
Fix Commits
github.com/webpack/webpack-dev-server/commit/5c9378bb01276357d7af208a0856ca2163db188egithub.com/webpack/webpack-dev-server/commit/72efaab83381a0e1c4914adf401cbd210b7de7eb
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