{"id":"CVE-2026-123584","published":"2026-11-08T02:16:52.160","lastModified":"2026-11-10T22:15:59.797","description":"The hickory-net crate in Hickory DNS 0.26.0 before 0.26.2 stops listening and returns an error when a client UDP connection receives a datagram that cannot be parsed as a DNS message. Remote attackers who guess the query's source port, without knowing the transaction ID, can spoof malformed responses to abort client queries, causing denial of service.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-696"],"vendors":[],"products":[],"references":[{"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-v44v-c8m4-gc43","tags":[]},{"url":"https://www.vulncheck.com/advisories/hickory-dns-0.26.0-before-0.26.2-udp-client-denial-of-service-via-spoofed-responses","tags":[]}],"exploitRefs":[{"url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-v44v-c8m4-gc43","tags":[]}],"hasPoc":true,"ai":null}