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CVE-2018-14732

N/A

Published: September 21, 2018 at 05:00 PM UTC

Updated: June 17, 2026 at 01:41 AM UTC

1 product affected across 1 vendorWebpack Dev Server

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Severity

N/A

Exploit prediction

EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Webpack Dev Server · Webpack Js

95%

v < 3.1.6

Affected range stops below 3.1.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10

References (3)

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages

x_refsource_CONFIRMPatchThird Party Advisory

Source: [email protected]

https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10

x_refsource_CONFIRMExploitThird Party Advisory

Source: [email protected]

https://github.com/webpack/webpack-dev-server/issues/1445

CVSS

5MEDIUM[email protected]

Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-20

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