{"action":"Upgrade dnsdist to 2.1.0-1 or later.","affected":[{"fixed":"2.1.0-1","introduced":"0"}],"component":"dnsdist","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.1.0-1"],"id":"tcs_01M5NRXED40QM4G0M4K7TYD6AF","modified_at":"2026-10-26T12:02:57.364982391Z","published_at":"2026-06-25T13:16:39.527Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40209","https://security-tracker.debian.org/tracker/CVE-2026-40209"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40209#Debian:14/dnsdist","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40209"}],"summary":"An attacker might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a"}