CVE-2018-14730 Missing Origin Validation in browserify-hmr

HighCVSS 7.5 EPSS 1.7%

Published: 2018-09-21 20:00
Updated: 2026-06-17 04:41
Exploit status: No public exploit known

Description

An issue was discovered in Browserify-HMR. 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://127.0.0.1:3123/ connection from any origin.

Affected products

Product	Affected versions	Fixed in
npm browserify-hmr(npm)	< 0.4.0	0.4.0
browserify-hot module replacement project browserify-hot module replacement	All versions	No fix listed

References

github.com third-party-advisory
blog.cal1.cn
www.npmjs.com
nvd.nist.gov third-party-advisory
blog.cal1.cn exploit third-party-advisory
github.com

CVSS v3.1

7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

All scores (3)

v3.1 7.5 · nvd@nist.gov
v3.1 7.5 · github
v2.0 5.0 · nvd@nist.gov

Weakness & likelihood

EPSS (exploitation probability, 30 days): 1.69% (percentile 77.4)
CWE: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.