CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2025-30360 – webpack-dev-server users' source code may be stolen when they access a malicious web site with non-Chromium based browser
https://notcve.org/view.php?id=CVE-2025-30360
03 Jun 2025 — 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 WebSoc... • https://github.com/webpack/webpack-dev-server/blob/55220a800ba4e30dbde2d98785ecf4c80b32f711/lib/Server.js#L3113-L3127 • CWE-346: Origin Validation Error •
CVSS: 5.4EPSS: 0%CPEs: 1EXPL: 0CVE-2025-30359 – webpack-dev-server users' source code may be stolen when they access a malicious web site
https://notcve.org/view.php?id=CVE-2025-30359
03 Jun 2025 — 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 att... • https://github.com/webpack/webpack-dev-server/commit/d2575ad8dfed9207ed810b5ea0ccf465115a2239 • CWE-749: Exposed Dangerous Method or Function •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 2CVE-2018-14732
https://notcve.org/view.php?id=CVE-2018-14732
21 Sep 2018 — An issue was discovered in lib/Server.js in webpack-dev-server before 3.1.6. Attackers are able to steal developer's code because the origin of requests is not checked by the WebSocket server, which is used for HMR (Hot Module Replacement). Anyone can receive the HMR message sent by the WebSocket server via a ws://127.0.0.1:8080/ connection from any origin. Se ha descubierto un problema en lib/Server.js en webpack-dev-server en versiones anteriores a la 3.1.6. Los atacantes pueden robar el código del desarr... • https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages • CWE-20: Improper Input Validation •