{"affected":[{"defaultStatus":"unaffected","ecosystem":"cargo","packageName":"hickory-proto","product":"hickory-dns","source":"CNA: VulnCheck","vendor":"hickory-dns","versions":[{"lessThanOrEqual":"0.25.2","status":"affected","version":"0.25.0-alpha.3","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"cargo","packageName":"hickory-net","product":"hickory-dns","source":"CNA: VulnCheck","vendor":"hickory-dns","versions":[{"lessThan":"0.26.1","status":"affected","version":"0.26.0-alpha.1","versionType":"semver"},{"status":"unaffected","version":"0.26.1","versionType":"semver"}]}],"cveId":"CVE-2026-123607","cwes":["CWE-835"],"description":"Hickory DNS hickory-proto 0.25.0-alpha.3 through 0.25.2 and hickory-net before 0.26.1 contain an unbounded loop vulnerability in DnssecDnsHandle NSEC3 closest-encloser proof validation when the SOA owner is not an ancestor of the QNAME. Upstream attackers can return NoData or NXDomain responses with a cross-zone SOA record to panic debug builds or exhaust memory in release builds.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794101913416,"publishedAt":1794101913416,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-3v94-mw7p-v465"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/hickory-dns-nsec3-closest-encloser-proof-unbounded-loop-denial-of-service"}],"remediation":[],"revision":"d617a3eb88e67e9104815e0c974259fa8718a7793697e094201770b7f35e6f25","sources":[{"modifiedAt":1794101913416,"name":"CNA: VulnCheck","retrievedAt":1794103845605,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123607"}],"ssvc":null,"status":"published","title":"Hickory DNS NSEC3 Closest-Encloser Proof Unbounded Loop Denial of Service","updatedAt":1794103845605}