Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2018-12123

CVE-2018-12123MEDIUM

The Node.js Project Node.js — Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Hostname spoofing in URL parser for javascript protocol: If a …

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  N  L  N    4.3   .0403   90.5     —

AFFECTED
  Product  Versions                                                            Fixed
  Node.js  All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0 –  —

TIMELINE
  Jun 11  Reserved by nodejs
  Nov 28  Published (CNA: nodejs)
  Oct 8   ENRICHED — CVE-2018-12123 (The Node.js Project Node.js). Received CVSS 4.3 and CPE data from NVD.

CWE-20, CWE-115 · CNA: nodejs · CVSS v3.1 · 4 references · NVD status: Modified

Description

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Hostname spoofing in URL parser for javascript protocol: If a Node.js application is using url.parse() to determine the URL hostname, that hostname can be spoofed by using a mixed case "javascript:" (e.g. "javAscript:") protocol (other protocols are not affected). If security decisions are made about the URL based on the hostname, they may be incorrect.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 11, 2018	Reserved	Reserved by nodejs
November 28, 2018	Published	Published (CNA: nodejs)
October 8, 2026	ENRICHED	ENRICHED — CVE-2018-12123 (The Node.js Project Node.js). Received CVSS 4.3 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
The Node.js Project	Node.js	—	All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0	—

Weaknesses

CWE-20 · CWE-115

References (4)

https://access.redhat.com/errata/RHSA-2019:1821 [Third Party Advisory]
https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/ [Patch, Vendor Advisory]
https://security.gentoo.org/glsa/202003-48 [Third Party Advisory]
https://security.netapp.com/advisory/ntap-20241213-0008/

Authoritative record: CVE-2018-12123 at cve.org

Vendors: the node.js project

Weaknesses: CWE-20 · CWE-115

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2018-12123 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.