CVE-2026-123590

MediumCVSS 4.8/10Last modified Nov 10, 2026

Description

Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 accept NSEC and NSEC3 records for DNSSEC nonexistence proofs when any other record with the same owner name passes signature validation. Attackers able to supply DNS responses can mix validly signed records with bogus same-name NSEC or NSEC3 records of different types in the authority section to forge nonexistence proofs.

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-347

Affected software

No affected versions have been published.

Timeline

Published: Nov 8, 2026
Last modified: Nov 10, 2026
NVD status: Deferred

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