{"items":[{"id":"NVI-00013115","kind":"vulnerability","title":"ip-address: Address6.isLinkLocal() recognizes fe80::/64 rather than fe80::/10, allowing SSRF and trust-boundary bypass to on-link hosts","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-rpw4-54j3-4h4q","CVE-2026-101913"],"plain_summary":"GitHub lists this reviewed advisory for ip-address. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-62fc4e45a214bcd3530185bde6bab591"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T19:57:08.043Z","value":"6.3 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-62fc4e45a214bcd3530185bde6bab591"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-65ce1ab26472882c5812e53a6255fa0b","url":"https://github.com/advisories/GHSA-rpw4-54j3-4h4q","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-rpw4-54j3-4h4q","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:24:25.558Z"},{"id":"sr-62fc4e45a214bcd3530185bde6bab591","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101913","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-101913","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:04.487Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-65ce1ab26472882c5812e53a6255fa0b"],"technology":"ip-address","known_exclusions":[],"conditions_summary":"### Summary\n\n`Address6.isLinkLocal()` recognizes `fe80::/64` rather than `fe80::/10`. Link-local unicast is the whole `/10` under RFC 4291 §2.4 and the IANA IPv6 Special-Purpose Address Registry, so the method returns `false` for every link-local address outside the one `/64` that stateless address autoconfiguration happens to use. `new Address6('fe81::1').isLinkLocal()` is `false`.\n\nThe library contradicts itself on the same object: for `fe81::1`, `getType()` returns `'Link-local unicast'`, `getScope()` returns `'Link local'`, and `isHostInSubnet(new Address6('fe80::/10'))` returns `true`, while `isLinkLocal()` returns `false`.\n\nAn application that builds a network trust-boundary decision on these checks (for example a filter intended to block Server-Side Request Forgery, or SSRF) will classify a link-local target as unremarkable and allow the request. SSRF is an attack in which a user-supplied address coaxes the server into making a request to an internal destination the user could not otherwise reach.\n\n### Details\n\n`isLinkLocal()` in `src/ipv6.ts` compares the first 64 bits of the address against a literal string:\n\n```ts\n// Zeroes are required, i.e. we can't check isHostInSubnet","public_affected_ranges":["<= 10.5.0"]}],"null_published_at":"2026-11-07T07:07:42.477Z","source_updated_at":"2026-09-28T20:43:57.000Z","source_disclosed_at":"2026-09-28T20:43:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T07:24:25.558Z"},{"id":"NVI-00013115","kind":"vulnerability","title":"ip-address: Address6.isLinkLocal() recognizes fe80::/64 rather than fe80::/10, allowing SSRF and trust-boundary bypass to on-link hosts","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-rpw4-54j3-4h4q","CVE-2026-101913"],"plain_summary":"GitHub lists this reviewed advisory for ip-address. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-65ce1ab26472882c5812e53a6255fa0b"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-65ce1ab26472882c5812e53a6255fa0b","url":"https://github.com/advisories/GHSA-rpw4-54j3-4h4q","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-rpw4-54j3-4h4q","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:24:25.558Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-65ce1ab26472882c5812e53a6255fa0b"],"technology":"ip-address","known_exclusions":[],"conditions_summary":"### Summary\n\n`Address6.isLinkLocal()` recognizes `fe80::/64` rather than `fe80::/10`. Link-local unicast is the whole `/10` under RFC 4291 §2.4 and the IANA IPv6 Special-Purpose Address Registry, so the method returns `false` for every link-local address outside the one `/64` that stateless address autoconfiguration happens to use. `new Address6('fe81::1').isLinkLocal()` is `false`.\n\nThe library contradicts itself on the same object: for `fe81::1`, `getType()` returns `'Link-local unicast'`, `getScope()` returns `'Link local'`, and `isHostInSubnet(new Address6('fe80::/10'))` returns `true`, while `isLinkLocal()` returns `false`.\n\nAn application that builds a network trust-boundary decision on these checks (for example a filter intended to block Server-Side Request Forgery, or SSRF) will classify a link-local target as unremarkable and allow the request. SSRF is an attack in which a user-supplied address coaxes the server into making a request to an internal destination the user could not otherwise reach.\n\n### Details\n\n`isLinkLocal()` in `src/ipv6.ts` compares the first 64 bits of the address against a literal string:\n\n```ts\n// Zeroes are required, i.e. we can't check isHostInSubnet","public_affected_ranges":["<= 10.5.0"]}],"null_published_at":"2026-11-01T07:29:12.923Z","source_updated_at":"2026-09-28T20:43:57.000Z","source_disclosed_at":"2026-09-28T20:43:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T07:24:25.558Z"}],"next_cursor":null,"snapshot_revision":"42594"}