CVE-2026-123598

Name	CVE-2026-123598
Description	The validating recursor in Hickory DNS hickory-recursor 0.25.0 through 0.26.0-alpha.1, hickory-resolver 0.26.0-alpha.1 before 0.26.2, and hickory-net 0.26.0-beta.1 before 0.26.2 caches DNSSEC-bogus answers using the untrusted, attacker-supplied record TTL (capped at 24 hours) instead of a short validation-failure TTL. A remote attacker who spoofs a single authoritative response with an invalid signature and a long TTL can keep the bogus result cached for up to 24 hours.
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-recursor (PTS)	trixie	0.24.1-1	vulnerable
	forky, sid	0.25.2-6	vulnerable
rust-hickory-resolver (PTS)	trixie	0.24.4-1	vulnerable
	forky, sid	0.26.3-1	fixed

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

Package	Type	Release	Fixed Version
rust-hickory-net	source	(unstable)	0.26.3-1
rust-hickory-recursor	source	(unstable)	(unfixed)
rust-hickory-resolver	source	(unstable)	0.26.3-1

https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-29q9-p769-j8gq