{"id":"CVE-2026-123600","aliases":[],"cve":{"records":[{"id":"CVE-2026-123600","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-11-06T01:00:16.506Z","published":"2026-11-08T01:38:28.487Z","modified":"2026-11-12T13:32:13.625Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-11-08T01:38:28.487Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-12T13:32:13.625Z"}],"references":[{"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-3jvh-8vj5-65rq","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/hickory-dns-hickory-proto-0.25.0-alpha.3-through-0.25.2-nsec3-apex-nodata-validation-bypass","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-358","description":"Improperly Implemented Security Check for Standard","source":"VulnCheck"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-12T13:31:58.265865Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Hickory DNS hickory-proto 0.25.0-alpha.3 through 0.25.2 NSEC3 Apex NODATA Validation Bypass","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"Hickory DNS hickory-proto 0.25.0-alpha.3 through 0.25.2 and hickory-net 0.26.0-alpha.1 before 0.26.2 contain a DNSSEC validation flaw in DnssecDnsHandle that accepts NSEC3-signed NODATA responses for zone-apex queries as secure without an NSEC3 record matching the hashed QNAME. On-path attackers or malicious authoritative servers can replay a validly signed non-apex NSEC3 with the zone's signed SOA to serve an authenticated (AD=1) denial of any apex RRtype for the negative-cache TTL.","score":6.3,"severity":"medium","published":"2026-11-08T01:38:28.487Z","modified":"2026-11-12T13:32:13.625Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"hickory-dns","name":"hickory-dns","platforms":[],"versions":[{"version":"0.25.0-alpha.3","status":"affected","lessThanOrEqual":"0.25.2","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:cargo/hickory-proto","packageIdentity":{"ecosystem":"crates.io","name":"hickory-proto"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-123600"},{"vendor":"hickory-dns","name":"hickory-dns","platforms":[],"versions":[{"version":"0.26.0-alpha.1","status":"affected","lessThan":"0.26.2","versionType":"semver"},{"version":"0.26.2","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:cargo/hickory-net","packageIdentity":{"ecosystem":"crates.io","name":"hickory-net"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-123600"}],"remediation":[],"references":["https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-3jvh-8vj5-65rq","https://www.vulncheck.com/advisories/hickory-dns-hickory-proto-0.25.0-alpha.3-through-0.25.2-nsec3-apex-nodata-validation-bypass"],"sources":[{"name":"CVE","id":"CVE-2026-123600","modified":"2026-11-12T13:32:13.625Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-123600"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":6.3},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","score":4.8}],"sourceAffected":[],"observedAt":"2026-11-13T01:26:11.859Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:25:32.844Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-11-08T02:10:35.849Z","attemptedAt":"2026-11-08T02:10:35.849Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-08T02:10:35.849Z","attemptedAt":"2026-11-08T02:10:35.849Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-11-08T02:10:36.990Z","attemptedAt":"2026-11-08T02:10:36.990Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-08T02:10:35.873Z","attemptedAt":"2026-11-08T02:10:35.873Z"}],"evidence":[],"aiSummary":{"text":"Hickory DNS hickory-proto versions 0.25.0-alpha.3 through 0.25.2 and hickory-net versions before 0.26.2 contain a DNSSEC validation flaw, allowing on-path attackers or malicious servers to bypass NSEC3 Apex NODATA validation. This weakness may lead to authenticated denial of apex RRtype records.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-08T02:06:43.856Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-123600"}]}}