{"id":"BIT-node-2026-105483","details":"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**.","aliases":["BIT-node-min-2026-105483","CVE-2026-105483"],"modified":"2026-10-29T10:56:11.934117234Z","published":"2026-10-29T08:55:55.170Z","database_specific":{"cpes":["cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"WEB","url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105483"}],"affected":[{"package":{"name":"node","ecosystem":"Bitnami","purl":"pkg:bitnami/node"},"ranges":[{"type":"SEMVER","events":[{"introduced":"23.0.0"},{"fixed":"24.22.1"},{"introduced":"25.0.0"},{"fixed":"26.12.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/node/BIT-node-2026-105483.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.2"}