CVE-2026-123590

Name	CVE-2026-123590
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rust-hickory-net (PTS)	forky, sid	0.26.3-1	fixed
rust-hickory-proto (PTS)	trixie	0.24.4-2	vulnerable
	forky, sid	0.26.3-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rust-hickory-net	source	(unstable)	0.26.3-1
rust-hickory-proto	source	(unstable)	(unfixed)

https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-57pw-897j-v4j6