{"id":"CVE-2026-123598","title":"Hickory DNS 0.25.0 through 0.26.0-alpha.1 DNSSEC Bogus Answer Cache Poisoning","summary":"The validating recursor in Hickory DNS hickory-recursor 0.25.0 through 0.26.0-alpha.1, hickory-resolver 0.26.0-alpha.1 before 0.26.2, and hickory-net 0.26.0-beta.1 before 0.26.2 caches DNSSEC-bogus answers using the untrusted, attacker-s…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-613"],"vendor":"hickory-dns","product":"hickory-dns","affected":["hickory-dns >= 0.25.0 <= 0.26.0-alpha.1","hickory-dns >= 0.26.0-alpha.1 < 0.26.2","hickory-dns >= 0.26.0-beta.1 < 0.26.2"],"published":"2026-11-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T01:38:27.111Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-123598","references":[{"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-29q9-p769-j8gq","label":"GitHub Security Advisory (GHSA-29q9-p769-j8gq)"},{"url":"https://www.vulncheck.com/advisories/hickory-dns-0.25.0-through-0.26.0-alpha.1-dnssec-bogus-answer-cache-poisoning","label":"VulnCheck Advisory: Hickory DNS 0.25.0 through 0.26.0-alpha.1 DNSSEC Bogus Answer Cache Poisoning"}],"tags":["cve.org"],"ingestedAt":"2026-11-08T02:43:18.646Z","slug":"CVE-2026-123598","body":"## Overview\n\nThe validating recursor in Hickory DNS hickory-recursor 0.25.0 through 0.26.0-alpha.1, hickory-resolver 0.26.0-alpha.1 before 0.26.2, and hickory-net 0.26.0-beta.1 before 0.26.2 caches DNSSEC-bogus answers using the untrusted, attacker-supplied record TTL (capped at 24 hours) instead of a short validation-failure TTL. A remote attacker who spoofs a single authoritative response with an invalid signature and a long TTL can keep the bogus result cached for up to 24 hours.\n\n## Affected\n\n- `hickory-dns >= 0.25.0 <= 0.26.0-alpha.1`\n- `hickory-dns >= 0.26.0-alpha.1 < 0.26.2`\n- `hickory-dns >= 0.26.0-beta.1 < 0.26.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}