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Fencer Intel
medium 4.3

CVE-2018-12123 json

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 No…

published 7y ago modified last mo. also EUVD-2018-4101

cvss
4.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.0%
EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

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.

Patch / fix

  • nodejs node.js 6.15.0, 8.14.0, 10.14.0, 11.3.0
  • nodejs Debian 14, Debian 13, Debian 12 10.15.0~dfsg-6

debian advisories DEBIAN-CVE-2018-12123

  • nodejs Ubuntu Pro 18.04 LTS 8.10.0~dfsg-2ubuntu0.4+esm1

ubuntu advisories UBUNTU-CVE-2018-12123

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rh-nodejs10-nodejs RHEL 3 SOFTWARE_COLLECTIONS 10.16.3-3.el7
  • rh-nodejs10 RHEL 3 SOFTWARE_COLLECTIONS 3.2-3.el7
  • rh-nodejs10-npm RHEL 3 SOFTWARE_COLLECTIONS 6.9.0-10.16.3.3.el7
  • rh-nodejs10-runtime RHEL 3 SOFTWARE_COLLECTIONS 3.2-3.el7
  • rh-nodejs10-scldevel RHEL 3 SOFTWARE_COLLECTIONS 3.2-3.el7
  • rh-nodejs8-nodejs RHEL 3 SOFTWARE_COLLECTIONS 8.16.0-1.el7
  • rh-nodejs8-npm RHEL 3 SOFTWARE_COLLECTIONS 6.4.1-8.16.0.1.el7

red hat advisories RHSA-2019:2939RHSA-2019:1821

  • nodejs6 SLE Module for Web and Scripting 12, OpenStack Cloud Crowbar 8, OpenStack Cloud 7 +1 more 6.16.0-11.21.1
  • nodejs8 SLE Module for Web and Scripting 15 8.15.0-3.11.1
  • nodejs4 SLE Module for Web and Scripting 12, Enterprise Storage 4 4.9.1-15.17.1
  • firefox-atk SLES 11 SP4-LTSS 2.26.1-2.8.4
  • mozilla-nss SLES 11 SP4-LTSS 3.45-38.9.3
  • firefox-gtk3 SLES 11 SP4-LTSS 3.10.9-2.15.3
  • mozilla-nspr SLES 11 SP4-LTSS 4.21-29.6.1
  • firefox-cairo SLES 11 SP4-LTSS 1.15.10-2.13.4

suse advisories SUSE-SU-2019:14246-1SUSE-SU-2019:0395-1SUSE-SU-2019:0118-1SUSE-SU-2019:0117-1

  • nodejs8 openSUSE Leap 15.0 8.15.0-lp150.2.9.1

opensuse advisories openSUSE-SU-2019:0089-1

  • nodejs Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 10.14.0-r0
  • nodejs Alpine 3.8 8.14.0-r0
  • nodejs-current Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 11.3.0-r0

alpine advisories ALPINE-CVE-2018-12123

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2018-12123 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-12123 updated cvss 5.3

nodejs: Hostname spoofing in URL parser for javascript protocol

  • Red Hat OpenShift Container Platform 3.2 nodejs Red Hat OpenShift Container Platform 3.3 nodejs Red Hat OpenShift Container Platform 3.4 nodejs Red Hat OpenShift Container Platform 3.5 nodejs
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 3.6 nodejs
    affected: no fix available “Fix deferred”
  • Red Hat OpenShift Container Platform 3.7 nodejs
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 3.9 nodejs Red Hat OpenShift Container Platform 3.10 nodejs
    affected: no fix available “Fix deferred”
  • Red Hat Software Collections rh-nodejs4-nodejs, rh-nodejs6-nodejs
    affected: no fix planned “Will not fix”
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more
    fixed: vendor fix RHSA-2019:2939
  • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7
    fixed: vendor fix RHSA-2019:1821
  • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs10-npm 6.9.0-10.16.3.3.el7 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more
    fixed: vendor fix RHSA-2019:2939
show 1 more
  • Red Hat Enterprise Linux 8 npm, nodejs, nodejs-libs, nodejs-nodemon, nodejs-full-i18n, nodejs-packaging, +1 more Red Hat OpenShift Application Runtimes nodejs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

4.03% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • The Node.js Project Node.js

Classification

Weakness
  • CWE-115 Misinterpretation of Input
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.