CVE-2026-123591Medium· 5.9▾ SunlitHickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 fail to verify, per RFC 6840 §4.4, that an NSEC or NSEC3 record denying a DS RRset also proves the delegation's NS record exists. Attackers can …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 32.5 · likelihood 0 · exploitation 0
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Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 fail to verify, per RFC 6840 §4.4, that an NSEC or NSEC3 record denying a DS RRset also proves the delegation's NS record exists. Attackers can reuse child-side NSEC or NSEC3 records to fake an insecure delegation and forge child-zone records.
hickory-dns >= 0.26.0-beta.1 < 0.26.2hickory-dns <= 0.26.0-alpha.1Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-123581Medium· 5.3Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Unrelated RRset
CVE-2026-123582Low· 3.7Hickory DNS 0.25.0 before 0.26.2 DNSSEC Validation Bypass via SOA Record
CVE-2026-123596High· 8.8Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Ancestor-Delegation NSEC
CVE-2026-123595High· 8.8Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Ancestor-Delegation NSEC3
CVE-2026-123594Medium· 4.8Hickory DNS through 0.26.0-alpha.1 DNSSEC NSEC Validation Bypass for Empty Non-Terminals
CVE-2026-123599Low· 3.7Hickory DNS before 0.26.0-beta.1 DNSSEC Validation Bypass via Non-IN Class Records