{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105482", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "state": "PUBLISHED", "assignerShortName": "hackerone", "dateReserved": "2026-10-05T15:00:00.729Z", "datePublished": "2026-10-23T16:15:05.831Z", "dateUpdated": "2026-10-23T16:15:05.831Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "A flaw in Node.js DNS resolution allows hostnames containing a NUL byte to be silently truncated by the dns.resolve*() functions and dns.reverse(). This is an incomplete fix of CVE-2026-48930, which only covered dns.lookup() and the net/tls host options.\r\n\r\nBecause the name is passed to c-ares as a C string, resolving attacker.example\\0.trusted.example queries attacker.example and returns its records without any error. Applications that validate a hostname, for example against a domain allowlist, and then resolve it with dns.resolve*() can act on records for a different name than the one they validated.\r\n\r\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:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 7.4, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "cweId": "CWE-284", "description": "CWE-284 Improper Access Control - Generic"}]}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-10-23T16:15:05.831Z"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "node", "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"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw in Node.js DNS resolution allows hostnames containing a NUL byte to be silently truncated by the dns.resolve*() functions and dns.reverse(). This is an incomplete fix of CVE-2026-48930, which only covered dns.lookup() and the net/tls host options.\r\n\r\nBecause the name is passed to c-ares as a C string, resolving attacker.example\\0.trusted.example queries attacker.example and returns its records without any error. Applications that validate a hostname, for example against a domain allowlist, and then resolve it with dns.resolve*() can act on records for a different name than the one they validated.\r\n\r\nThis vulnerability affects Node.js 26.x, 24.x, and 22.x."}], "id": "CVE-2026-105482", "lastModified": "2026-10-23T19:42:24.553", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-10-23T17:17:19.427", "references": [{"source": "[email protected]", "url": "https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "[email protected]", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[22.23.3,22.23.3]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[24.22.0,24.22.0]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[26.12.0,26.12.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "node", "source": "cna", "vendor": "nodejs"}, "product": "nodejs", "vendor": "nodejs"}], "created": "2026-10-23T17:30:17.168868+00:00", "title": "Node.js DNS Resolve Function Truncation Enables Hostname Validation Bypass", "updated": "2026-10-23T21:45:14.252019+00:00", "vendors": ["nodejs", "nodejs$PRODUCT$nodejs"]}