CVE-2018-14732

Name: CVE-2018-14732
Creator: NVD / NIST
Published: 2018-09-21T17:29:05.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.43%

Last modified Jun 17, 2026

CVE-2018-14732 is a vulnerability of currently unknown severity. 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). EPSS estimates a 2.43% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

2.43%

82.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Webpack.Js	Webpack-Dev-Server	< 3.1.6

References

https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20MessagesExploit, Third Party Advisory
https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10Patch, Third Party Advisory
https://github.com/webpack/webpack-dev-server/issues/1445Exploit, Third Party Advisory
https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20MessagesExploit, Third Party Advisory
https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10Patch, Third Party Advisory
https://github.com/webpack/webpack-dev-server/issues/1445Exploit, Third Party Advisory

Timeline

Published: Sep 21, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-14732?

How severe is CVE-2018-14732?

Severity scoring for CVE-2018-14732 is pending analysis. The EPSS model estimates a 2.43% probability of exploitation in the next 30 days.

How do I fix CVE-2018-14732?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-14732?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST