{"affected":[{"defaultStatus":"unaffected","product":"node","source":"CNA: hackerone","vendor":"nodejs","versions":[{"lessThanOrEqual":"22.23.3","status":"affected","version":"22.23.3","versionType":"semver"},{"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-2026-106069","cwes":["CWE-295"],"description":"A flaw in Node.js TLS hostname verification can cause a server certificate to be validated against a different IP address than the one the client connected to, when the host is a non-canonical IPv4 literal with a leading zero, such as `0127.0.0.1`.\n\n`tls.checkServerIdentity()` normalizes the host following the WHATWG URL rules, which read a leading-zero octet as octal (`0127.0.0.1` becomes `87.0.0.1`), while the connection is made through the operating system resolver, which on some platforms such as macOS reads it as decimal (`127.0.0.1`). A server at the connected address can then be authenticated with a certificate issued for another IP address.\n\nThis vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.","epss":{"date":"2026-11-01","percentile":0.23245,"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"}],"modifiedAt":1793626312012,"publishedAt":1792772105850,"references":[{"source":"CNA: hackerone","tags":[],"url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"}],"remediation":[],"revision":"b7d90c4e1aa149b2e06eb55ec904bd5676347c3d4ba362e543bd860b3c2dcec9","sources":[{"modifiedAt":1793626312012,"name":"CNA: hackerone","retrievedAt":1793628517907,"url":"https://www.cve.org/CVERecord?id=CVE-2026-106069"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793628544740,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-106069"}],"ssvc":{"assessedAt":1793626211711,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"CVE-2026-106069","updatedAt":1793628544740}