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CVE-2026-123602 Details

Description

The Hickory DNS recursor in all versions of hickory-recursor and in hickory-resolver 0.26.0-beta.1 before 0.26.2 (recursor feature) is vulnerable to ghost domain names attacks because it reuses child-side apex NS RRsets cached from zone NS queries for iterative resolution. By repeatedly querying a zone's NS records, an attacker keeps the stale RRset cached indefinitely, letting name servers whose delegation the parent revoked keep answering for the zone.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-2hxp-x833-73f7	[email protected]
https://www.vulncheck.com/advisories/hickory-dns-recursor-ghost-domain-attack-via-child-side-ns-rrset-caching	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-672	Operation on a Resource after Expiration or Release	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes