---
id: CVE-2026-123579
title: >-
  Hickory DNS 0.26.0-beta.1 before 0.26.2 DNSSEC Validation Bypass via Wildcard
  Expansion
summary: >-
  DNSSEC validation in Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and
  hickory-proto through 0.26.0-alpha.1 does not distinguish NODATA responses
  from wildcard-expanded positive responses. For a query that should return
  NODATA in a…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-358
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: '2026-11-08T01:38:14.066Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123579'
references:
  - url: >-
      https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-vrv5-968r-5ggm
    label: GitHub Security Advisory (GHSA-vrv5-968r-5ggm)
  - url: >-
      https://www.vulncheck.com/advisories/hickory-dns-0.26.0-beta.1-before-0.26.2-dnssec-validation-bypass-via-wildcard-expansion
    label: >-
      VulnCheck Advisory: Hickory DNS 0.26.0-beta.1 before 0.26.2 DNSSEC
      Validation Bypass via Wildcard Expansion
tags:
  - cve.org
ingestedAt: '2026-11-08T02:43:18.652Z'
---

## Overview

DNSSEC validation in Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 does not distinguish NODATA responses from wildcard-expanded positive responses. For a query that should return NODATA in a zone with wildcard records, an attacker can combine an NSEC3 record matching the query name with a signed wildcard record into a bogus positive response that validation accepts.

## Affected

- `hickory-dns >= 0.26.0-beta.1 < 0.26.2`
- `hickory-dns <= 0.26.0-alpha.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.