CVE-2026-123581
Hickory DNS through 0.26.0-alpha.1 DNSSEC Validation Bypass via Unrelated RRset
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
Hickory DNS hickory-proto through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 contain a DNSSEC validation flaw that accepts a response as a positive answer when any valid RRset appears in the answer section, without checking that the RRset is responsive to the query. Attackers can supply signed but unrelated RRsets so that responses lacking matching records are validated as positive answers instead of as no-data 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:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
hickory-dns / hickory-dns
0 ≤ 0.26.0-alpha.1
hickory-dns / hickory-dns
0.26.0-beta.1 < 0.26.2
References
Credits
🔍 qifan-sailboat