#VU109924 Missing Origin Validation in WebSockets in webpack-dev-server - CVE-2018-14732
Published: May 29, 2025
Vulnerability identifier: #VU109924
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-14732
CWE-ID: CWE-1385
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
webpack-dev-server
webpack-dev-server
Software vendor:
webpack
webpack
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to missing origin validation on the WebSocket interface in lib/Server.js. A remote attacker can trick the victim into visiting a malicious website that can open a WebSocket connection to localhost and access component source code.
Remediation
Install updates from vendor's website.