{"id":"RUSTSEC-2026-0512","summary":"DNSSEC validation accepted an unrelated signed RRset as the answer (hickory-proto)","details":"Up to 0.26.0-alpha.1, hickory-proto's DNSSEC validation treated a response with a non-empty answer section as a positive answer if its records validated, without checking that any of them matched the queried name and type. Someone who can answer or modify DNS responses could return a genuine signed RRset for another name or type and have it accepted as a validated answer.\n\nFrom 0.26.0-beta.1 the DNSSEC validation code lives in the hickory-net crate, where this was fixed in hickory-net 0.26.2. No hickory-proto release contains a fix. Users of DNSSEC validation in older hickory-proto releases (directly or through hickory-resolver or hickory-recursor) should move to the 0.26.2 or later releases, which validate through hickory-net.","aliases":["CVE-2026-123581","GHSA-929p-gjf6-5hqj","RUSTSEC-2026-0520"],"modified":"2026-11-12T14:40:54.645975781Z","published":"2026-09-03T12:00:00Z","database_specific":{"license":"CC0-1.0"},"references":[{"type":"PACKAGE","url":"https://crates.io/crates/hickory-proto"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2026-0512.html"},{"type":"WEB","url":"https://github.com/hickory-dns/hickory-dns/commit/77ec9c5d2e9481a0753bbaf1be3cd5175d300cff"}],"affected":[{"package":{"name":"hickory-proto","ecosystem":"crates.io","purl":"pkg:cargo/hickory-proto"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.26.0-beta.1"}]}],"ecosystem_specific":{"affected_functions":null,"affects":{"arch":[],"os":[],"functions":[]}},"database_specific":{"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0512.json","informational":null,"categories":["privilege-escalation"],"cvss":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}