PT-2025-23649 · Unknown · Webpack-Dev-Server

Sapphi-Red · Published 2025-06-03 · Updated 2025-11-21 · CVE-2025-30360

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 5.2.1

Description The issue allows an attacker to obtain source code via a method similar to that used to exploit a previously reported vulnerability. This is possible because webpack-dev-server always allows IP address Origin headers, enabling websites served on IP addresses to connect via WebSocket. The Origin header is checked to prevent Cross-site WebSocket hijacking.

Recommendations For versions prior to 5.2.1, update to version 5.2.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the WebSocket connection to prevent potential exploitation.

Exploit

Fix

Origin Validation Error

Weakness Enumeration

CWE-346

Related Identifiers

CVE-2025-30360

GHSA-9JGG-88MC-972H

Affected Products

Webpack-Dev-Server

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30360.json · Exploit
• https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-9jgg-88mc-972h · Vendor Advisory
• https://github.com/webpack/webpack-dev-server/commit/72efaab83381a0e1c4914adf401cbd210b7de7eb · Patch
• https://github.com/webpack/webpack-dev-server/commit/5c9378bb01276357d7af208a0856ca2163db188e · Patch
• https://osv.dev/vulnerability/CVE-2025-30360 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9jgg-88mc-972h · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-30360 · Security Note
• https://github.com/webpack/webpack-dev-server · Note
• https://github.com/webpack/webpack-dev-server/commit/d2575ad8dfed9207ed810b5ea0ccf465115a2239 · Note
• https://github.com/webpack/webpack-dev-server/blob/55220a800ba4e30dbde2d98785ecf4c80b32f711/lib/Server.js#L3113-L3127 · Note
• https://twitter.com/CVEnew/status/1929959144733159673 · Twitter Post
• https://t.me/cveNotify/143627 · Telegram Post
• https://t.me/cvetracker/25304 · Telegram Post