CVE-2026-123603 | hickory-dns up to 0.26.1 hickory-proto canonicalize access control

November 8, 2026 Yanac

A vulnerability was found in hickory-dns up to 0.26.1 and classified as critical. Affected is the function canonicalize of the component hickory-proto/hickory-resolver/hickory-server/hickory-recursor. Executing a manipulation can lead to improper access controls.

This vulnerability is tracked as CVE-2026-123603. The attack can be launched remotely. No exploit exists.

It is suggested to upgrade the affected component.VulDB Recent EntriesRead More