{"cve":"CVE-2018-12123","nvd":{"published":"2018-11-28T17:29:00.417","modified":"2026-10-08T22:16:45.207","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-20","CWE-115"],"references":["https://access.redhat.com/errata/RHSA-2019:1821","https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/","https://security.gentoo.org/glsa/202003-48","https://access.redhat.com/errata/RHSA-2019:1821","https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/"],"products":["nodejs:node.js"],"source":"nvd","synced_at":"2026-10-19T20:53:59.789560037+00:00"},"epss":{"cve":"CVE-2018-12123","score":0.04032,"percentile":0.90525,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}