CVE-2026-106072

{"id": "CVE-2026-106072", "cveTags": [], "metrics": {"cvssMetricV30": [{"type": "Secondary", "source": "support@hackerone.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 6.7, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 1.2}]}, "affected": [{"source": "support@hackerone.com", "affectedData": [{"vendor": "nodejs", "product": "node", "versions": [{"status": "affected", "version": "22.23.3", "versionType": "semver", "lessThanOrEqual": "22.23.3"}, {"status": "affected", "version": "24.22.0", "versionType": "semver", "lessThanOrEqual": "24.22.0"}, {"status": "affected", "version": "26.12.0", "versionType": "semver", "lessThanOrEqual": "26.12.0"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-23T17:17:20.203", "references": [{"url": "https://nodejs.org/en/blog/vulnerability/october-2026-security-releases", "source": "support@hackerone.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-295"}]}], "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**."}], "lastModified": "2026-10-23T19:42:24.553", "sourceIdentifier": "support@hackerone.com"}