{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "10.5.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d03e960c7cc3179ef25c8a44b4f94dd499625546"
            },
            {
              "fixed": "38b02d73cfc0724f9ad61c65b6328e116eac03ec"
            }
          ],
          "repo": "https://github.com/beaugunderson/ip-address",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rpw4-54j3-4h4q"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-697",
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101913.json"
  },
  "details": "ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.5.1, the Address6 isLinkLocal method in src/ipv6.ts recognizes only fe80::/64 instead of the complete fe80::/10 IPv6 link-local range. An attacker-controlled address elsewhere in fe80::/10 can therefore pass a trust-boundary check that relies on isLinkLocal. The same address is identified as link-local by getType and getScope, exposing the inconsistent classification. A successful bypass can reach an on-link host outside the intended trust boundary. This issue is fixed in version 10.5.1.",
  "id": "CVE-2026-101913",
  "modified": "2026-09-30T03:30:35.519908240Z",
  "published": "2026-09-28T17:49:02.657Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/beaugunderson/ip-address/releases/tag/v10.5.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101913.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/beaugunderson/ip-address/security/advisories/GHSA-rpw4-54j3-4h4q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101913"
    },
    {
      "type": "FIX",
      "url": "https://github.com/beaugunderson/ip-address/commit/d03e960c7cc3179ef25c8a44b4f94dd499625546"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ip-address: Address6.isLinkLocal() recognizes fe80::/64 rather than fe80::/10, allowing SSRF and trust-boundary bypass to on-link hosts"
}