CVE-2026-123599
Hickory DNS before 0.26.0-beta.1 DNSSEC Validation Bypass via Non-IN Class Records
CVSS Score
3.7
EPSS Score
0.0%
EPSS Percentile
0th
Hickory DNS hickory-proto before 0.26.0-beta.1 and hickory-net before 0.26.2 contain a DNSSEC validation bypass because verify_rrsets() ignores DNS class when partitioning RRsets, so non-IN records skip signature verification yet are marked secure when the IN records verify. Attackers able to supply DNS responses can include forged CH or HS class records, including DS records, to authenticate any DNSKEY and forge child zone responses.
| CWE | CWE-345 |
| Vendor | hickory-dns |
| Product | hickory-dns |
| Published | Nov 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
hickory-dns / hickory-dns
0 < 0.26.0-beta.1
hickory-dns / hickory-dns
0.26.0-beta.1 < 0.26.2
References
Credits
🔍 qifan-sailboat