{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101910", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-28T15:55:37.907Z", "datePublished": "2026-09-28T17:45:27.675Z", "dateUpdated": "2026-09-28T18:12:34.050Z"}, "containers": {"cna": {"title": "ip-address: no classifier recognizes the NAT64 local-use range 64:ff9b:1::/48, allowing SSRF and trust-boundary bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "lang": "en", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/beaugunderson/ip-address/security/advisories/GHSA-2vr4-cq9g-pvrc", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/beaugunderson/ip-address/security/advisories/GHSA-2vr4-cq9g-pvrc"}, {"name": "https://github.com/beaugunderson/ip-address/commit/ab3dc88bcf5374344168a2ba075ca7ac4ff257f8", "tags": ["x_refsource_MISC"], "url": "https://github.com/beaugunderson/ip-address/commit/ab3dc88bcf5374344168a2ba075ca7ac4ff257f8"}, {"name": "https://github.com/beaugunderson/ip-address/releases/tag/v10.5.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/beaugunderson/ip-address/releases/tag/v10.5.1"}], "affected": [{"vendor": "beaugunderson", "product": "ip-address", "versions": [{"version": ">= 10.2.0, < 10.5.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-28T17:45:27.675Z"}, "descriptions": [{"lang": "en", "value": "ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. From 10.2.0 until 10.5.1, the Address6 isPrivate classifier in src/ipv6.ts does not recognize the NAT64 local-use range 64:ff9b:1::/48. Applications that combine isPrivate, isLoopback, and isLinkLocal for a trust-boundary decision can treat an internal IPv4 destination encoded through that range as external. Exploitation depends on a server network using an operator-selected NAT64 prefix within the local-use range. A successful bypass can cross the intended network trust boundary. This issue is fixed in version 10.5.1."}], "source": {"advisory": "GHSA-2vr4-cq9g-pvrc", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/beaugunderson/ip-address/security/advisories/GHSA-2vr4-cq9g-pvrc", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-28T18:12:11.522445Z", "id": "CVE-2026-101910", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-28T18:12:34.050Z"}}]}}

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