PT-2018-12689 · Webpack · Webpack-Dev-Server

Chromium1337 · Published 2018-09-21 · Updated 2025-11-21 · CVE-2018-14732

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions webpack-dev-server versions prior to 3.1.10 webpack-dev-server versions prior to 3.1.6

Description An issue in the WebSocket server used for Hot Module Replacement (HMR) allows attackers to steal a developer's source code because the origin of requests is not validated. This enables a remote attacker to receive HMR messages sent by the WebSocket server via a ws://127.0.0.1:8080/ connection from any origin.

Recommendations For versions prior to 3.1.6, update to version 3.1.11 or later. For versions prior to 3.1.10, update to version 3.1.11 or later.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-14732

GHSA-CF66-XWFP-GVC4

Affected Products

Webpack-Dev-Server

References · 12

• 🔥 https://github.com/webpack/webpack-dev-server/issues/1445 · Exploit
• 🔥 https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages · Exploit
• https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10 · Patch
• https://osv.dev/vulnerability/CVE-2018-14732 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14732 · Security Note
• https://osv.dev/vulnerability/GHSA-cf66-xwfp-gvc4 · Vendor Advisory
• https://github.com/webpack/webpack-dev-server · Note
• https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md#3111-2018-12-21 · Note
• https://github.com/webpack/webpack-dev-server/issues/1620 · Note
• https://t.me/cvetracker/25304 · Telegram Post
• https://npmjs.com/advisories/725 · Note
• https://t.me/cveNotify/143627 · Telegram Post