{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101913","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-09-28T15:55:37.907Z","datePublished":"2026-09-28T17:49:02.657Z","dateUpdated":"2026-09-28T18:38:42.684Z"},"containers":{"cna":{"title":"ip-address: Address6.isLinkLocal() recognizes fe80::/64 rather than fe80::/10, allowing SSRF and trust-boundary bypass to on-link hosts","problemTypes":[{"descriptions":[{"cweId":"CWE-697","lang":"en","description":"CWE-697: Incorrect Comparison","type":"CWE"}]},{"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":"LOW","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/beaugunderson/ip-address/security/advisories/GHSA-rpw4-54j3-4h4q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/beaugunderson/ip-address/security/advisories/GHSA-rpw4-54j3-4h4q"},{"name":"https://github.com/beaugunderson/ip-address/commit/d03e960c7cc3179ef25c8a44b4f94dd499625546","tags":["x_refsource_MISC"],"url":"https://github.com/beaugunderson/ip-address/commit/d03e960c7cc3179ef25c8a44b4f94dd499625546"},{"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":"< 10.5.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-28T17:49:19.138Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-rpw4-54j3-4h4q","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/beaugunderson/ip-address/security/advisories/GHSA-rpw4-54j3-4h4q","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-28T18:37:28.332844Z","id":"CVE-2026-101913","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":"2026-09-28T18:38:42.684Z"}}]}}