Medium severity6.8NVD Advisory· Published Nov 8, 2026

CVE-2026-123587

Description

The DNSSEC validation in the Hickory DNS hickory-net crate 0.26.0 before 0.26.2 identifies wraparound NSEC records by comparing the next domain name to an SOA record in the response, accepting that SOA even if it fails validation. Attackers who can supply DNS responses can combine a genuine NSEC record and its RRSIG with a crafted SOA record to forge nonexistence of any RRset.

Affected products

Hickory DNS/Hickory DNSllm-fuzzy
Range: <0.26.2

Patches

Vulnerability mechanics

References

github.com/hickory-dns/hickory-dns/security/advisories/GHSA-qw83-5pm2-ggp5nvd
www.vulncheck.com/advisories/hickory-dns-0.26.0-before-0.26.2-dnssec-nonexistence-forgery-via-wraparound-nsecnvd

News mentions

No linked articles in our index yet.

cvss	0.442
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000