{"id":"CVE-2026-123580","title":"Hickory-DNS 0.26.0-beta.1 before 0.26.2 DNSSEC Nonexistence Proof Forgery via NSEC3","summary":"Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 perform insufficient checks on NSEC3 record names during DNSSEC verification, comparing only the hashed label without confirming the record belo…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cvssSource":"cna","cwe":["CWE-290"],"vendor":"hickory-dns","product":"hickory-dns","affected":["hickory-dns >= 0.26.0-beta.1 < 0.26.2","hickory-dns <= 0.26.0-alpha.1"],"published":"2026-11-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T01:38:14.779Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-123580","references":[{"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-p2jv-r3m3-7wf4","label":"GitHub Security Advisory (GHSA-p2jv-r3m3-7wf4)"},{"url":"https://www.vulncheck.com/advisories/hickory-dns-0.26.0-beta.1-before-0.26.2-dnssec-nonexistence-proof-forgery-via-nsec3","label":"VulnCheck Advisory: Hickory-DNS 0.26.0-beta.1 before 0.26.2 DNSSEC Nonexistence Proof Forgery via NSEC3"}],"tags":["cve.org"],"ingestedAt":"2026-11-08T02:43:18.652Z","slug":"CVE-2026-123580","body":"## Overview\n\nHickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 perform insufficient checks on NSEC3 record names during DNSSEC verification, comparing only the hashed label without confirming the record belongs to the correct zone. Attackers can supply NSEC3 records from another zone with a matching hash label to forge DNSSEC nonexistence proofs.\n\n## Affected\n\n- `hickory-dns >= 0.26.0-beta.1 < 0.26.2`\n- `hickory-dns <= 0.26.0-alpha.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}