{"id":"UBUNTU-CVE-2026-123577","details":"Hickory DNS from 0.24.0 before 0.26.2 contains a resource exhaustion vulnerability that allows remote attackers to consume server memory via unbounded DoH request bodies. Attackers can send large request bodies over HTTP/2 or HTTP/3 to a DNS over HTTP server, causing memory exhaustion and denial of service.","modified":"2026-11-10T02:50:21.801139623Z","published":"2026-11-09T00:00:00Z","upstream":["CVE-2026-123577"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-123577"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-123577"},{"type":"REPORT","url":"https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-5r56-v84h-c3w5"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/hickory-dns-0.24.0-before-0.26.2-doh-unbounded-request-body-denial-of-service"}],"affected":[{"package":{"name":"rust-hickory-server","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/rust-hickory-server?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.24.4-2","0.26.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.26.1-1","binary_name":"librust-hickory-server-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-123577.json"}},{"package":{"name":"rust-hickory-server","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rust-hickory-server?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.24.4-2"],"ecosystem_specific":{"binaries":[{"binary_name":"librust-hickory-server-dev","binary_version":"0.24.4-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-123577.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}