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Vulnerability details: VCID-xnc5-2mfd-1yfp
Vulnerability ID VCID-xnc5-2mfd-1yfp
Aliases CVE-2018-12123
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.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12123.json
epss 0.0198 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.0198 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.02665 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.02665 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.04789 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.06364 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
epss 0.06364 https://api.first.org/data/v1/epss?cve=CVE-2018-12123
cvssv3 5.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-12123
cvssv3.1 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-12123
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2019:1821
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12123.json
https://api.first.org/data/v1/epss?cve=CVE-2018-12123
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12123
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/
https://security.gentoo.org/glsa/202003-48
https://security.netapp.com/advisory/ntap-20241213-0008/
1661010 https://bugzilla.redhat.com/show_bug.cgi?id=1661010
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
CVE-2018-12123 https://nvd.nist.gov/vuln/detail/CVE-2018-12123
USN-USN-4796-1 https://usn.ubuntu.com/USN-4796-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12123.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-12123
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-12123
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.82903
EPSS Score 0.0198
Published At Aug. 3, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:30:25.383945+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.20/main.json 37.0.0