Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Webpack.Js | Webpack-Dev-Server | < 5.2.1 |
Related Weaknesses (CWE)
References
- https://github.com/webpack/webpack-dev-server/blob/55220a800ba4e30dbde2d98785ecfProduct
- https://github.com/webpack/webpack-dev-server/commit/5c9378bb01276357d7af208a085Patch
- https://github.com/webpack/webpack-dev-server/commit/72efaab83381a0e1c4914adf401Patch
- https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-9jgg-88mcExploitVendor Advisory
FAQ
What is CVE-2025-30360?
CVE-2025-30360 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 mal...
How severe is CVE-2025-30360?
CVE-2025-30360 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-30360?
Check the references section above for vendor advisories and patch information. Affected products include: Webpack.Js Webpack-Dev-Server.