{"affected":[{"defaultStatus":"unaffected","product":"node","source":"CNA: hackerone","vendor":"nodejs","versions":[{"lessThanOrEqual":"24.22.0","status":"affected","version":"24.22.0","versionType":"semver"},{"lessThanOrEqual":"26.12.0","status":"affected","version":"26.12.0","versionType":"semver"}]}],"cveId":"CVE-2026-105483","cwes":["CWE-295"],"description":"A flaw in Node.js TLS hostname verification allows a certificate without a matching IP address SAN to authenticate a connection to an IPv4 address when the host is written with non-ASCII characters, such as fullwidth digits (`１２７.0.0.1`).\n\n`tls.checkServerIdentity()` did not recognize such hosts as IP addresses, even though they normalize and resolve to a regular IPv4 address, and matched them against the certificate DNS names and Common Name instead. A certificate containing `DNS:127.0.0.1` or `DNS:*.0.0.1` could therefore be accepted for an IP endpoint it was not issued for. This is a regression introduced after the fix for CVE-2026-48618.\n\nThis vulnerability affects Node.js **26.x** and **24.x**.","epss":{"date":"2026-11-02","percentile":0.23232,"score":0.00304},"exploits":[],"kev":null,"metrics":[{"score":7.4,"severity":"high","source":"CNA: hackerone","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.0"},{"score":7.4,"severity":"high","source":"NVD: support@hackerone.com","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.0"}],"modifiedAt":1793636243620,"publishedAt":1792772105773,"references":[{"source":"CNA: hackerone","tags":[],"url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"},{"source":"support@hackerone.com","tags":[],"url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"}],"remediation":[],"revision":"4d4c83d4c19f1dffeb8feee470b4a734e426a126e21d5055bfc3454d075a007f","sources":[{"modifiedAt":1793633831172,"name":"CNA: hackerone","retrievedAt":1793635706119,"url":"https://www.cve.org/CVERecord?id=CVE-2026-105483"},{"modifiedAt":1793636243620,"name":"NVD","retrievedAt":1793643423654,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105483"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793635727432,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105483"}],"ssvc":{"assessedAt":1793633682524,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"CVE-2026-105483","updatedAt":1793643423654}