{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-106072",
        "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "state": "PUBLISHED",
        "assignerShortName": "hackerone",
        "dateReserved": "2026-10-06T15:00:00.655Z",
        "datePublished": "2026-10-23T16:15:05.783Z",
        "dateUpdated": "2026-10-23T16:15:05.783Z"
    },
    "containers": {
        "cna": {
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A flaw in Node.js TLS hostname verification allows a certificate with only a DNS SAN to authenticate an IP endpoint when the client connects using a non-canonical IPv4 spelling, such as `0177.0.0.1`, `0x7f.0.0.1`, `2130706433` or `127.1`.\n\n`tls.checkServerIdentity()` did not classify these hosts as IP addresses, but normalized them to their canonical form and matched the result against the certificate DNS names. A certificate containing `DNS:127.0.0.1` and no `IP Address:127.0.0.1` SAN was therefore accepted, while the same certificate is correctly rejected for `127.0.0.1`. Exploitation requires a certificate with a numeric DNS SAN issued by a CA trusted by the client, and a platform resolver that accepts these spellings, such as glibc.\n\nThis vulnerability affects Node.js **26.x**, **24.x**, and **22.x**."
                }
            ],
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "vendor": "nodejs",
                    "product": "node",
                    "versions": [
                        {
                            "version": "22.23.3",
                            "status": "affected",
                            "lessThanOrEqual": "22.23.3",
                            "versionType": "semver"
                        },
                        {
                            "version": "24.22.0",
                            "status": "affected",
                            "lessThanOrEqual": "24.22.0",
                            "versionType": "semver"
                        },
                        {
                            "version": "26.12.0",
                            "status": "affected",
                            "lessThanOrEqual": "26.12.0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"
                }
            ],
            "metrics": [
                {
                    "cvssV3_0": {
                        "version": "3.0",
                        "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L",
                        "baseScore": 6.7,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "cweId": "CWE-295",
                            "description": "CWE-295 Improper Certificate Validation"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
                "shortName": "hackerone",
                "dateUpdated": "2026-10-23T16:15:05.783Z"
            }
        }
    }
}