What is CVE-2026-123582?

CVE-2026-123582 is a low-severity vulnerability in Hickory-Dns, classified under Insufficient Verification of Data Authenticity. CVSS score: 3.7/10. Published 2026-11-08.

How severe is CVE-2026-123582?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Hickory-Dns

CVE-2026-123582

The validating recursive resolver and validating forwarder in Hickory DNS (hickory-server) 0.25.0 before 0.26.2 do not check whether the SOA record passed DNSSEC validation when assembling NXDOMAIN or NODATA responses. An attacker able to supply forged DNS responses can have a forged SOA record returned to clients with the AD bit set, misleading clients that rely on the server's DNSSEC validation.

Published 2026-11-08.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Hickory-Dns

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

GitHub Security Advisory (GHSA-8hq4-5836-w6q4) (vendor-advisory)
VulnCheck Advisory: Hickory DNS 0.25.0 before 0.26.2 DNSSEC Validation Bypass via SOA Record (third-party-advisory)

Frequently asked questions

What is CVE-2026-123582?: CVE-2026-123582 is a low-severity vulnerability in Hickory-Dns, classified under Insufficient Verification of Data Authenticity. CVSS score: 3.7/10. Published 2026-11-08.
How severe is CVE-2026-123582?: Low severity. CVSS v3 base score is 3.7 out of 10.