CVE-2018-12123

MEDIUM
4.3
CVSS Score
Published: November 28, 2018 at 05:00 PM UTC
Updated: October 8, 2026 at 10:16 PM UTC
1 product affected across 1 vendorNode.js

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Severity
MEDIUM4.3
Exploit prediction
EPSS 4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

10.0.0 ≤ v < 10.14.011.0.0 ≤ v < 11.3.06.0.0 ≤ v < 6.15.08.0.0 ≤ v < 8.14.0*All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0
Affected range stops below 10.14.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.3.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.15.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.14.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:1821
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/202003-48
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.netapp.com/advisory/ntap-20241213-0008/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-115CWE-20

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