{"id":"UBUNTU-CVE-2026-101913","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.","modified":"2026-09-30T21:41:53Z","published":"2026-09-28T18:17:00Z","upstream":["CVE-2026-101913"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-101913"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-101913"},{"type":"REPORT","url":"https://github.com/beaugunderson/ip-address/security/advisories/GHSA-rpw4-54j3-4h4q"},{"type":"REPORT","url":"https://github.com/beaugunderson/ip-address/commit/d03e960c7cc3179ef25c8a44b4f94dd499625546"},{"type":"REPORT","url":"https://github.com/beaugunderson/ip-address/releases/tag/v10.5.1"}],"affected":[{"package":{"name":"node-ip-address","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-ip-address?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.3.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-ip-address","binary_version":"6.3.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101913.json"}},{"package":{"name":"node-ip-address","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-ip-address?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.4.0-1","8.1.0-2"],"ecosystem_specific":{"binaries":[{"binary_version":"8.1.0-2","binary_name":"node-ip-address"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101913.json"}},{"package":{"name":"node-ip-address","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-ip-address?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.1.0-2"],"ecosystem_specific":{"binaries":[{"binary_version":"8.1.0-2","binary_name":"node-ip-address"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101913.json"}},{"package":{"name":"node-ip-address","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-ip-address?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.1.0-2","8.1.0-3"],"ecosystem_specific":{"binaries":[{"binary_version":"8.1.0-3","binary_name":"node-ip-address"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101913.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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":"Ubuntu","score":"medium"}]}