SB2018092126 - Missing WebSocket origin validation in webpack-dev-server
Published: September 21, 2018 Updated: May 29, 2025
Security Bulletin ID
SB2018092126
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Missing Origin Validation in WebSockets (CVE-ID: CVE-2018-14732)
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 update from vendor's website.