{"action":"Upgrade dnsdist to 1.9.15-0+deb13u1 or later.","affected":[{"fixed":"1.9.15-0+deb13u1","introduced":"0"}],"component":"dnsdist","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.9.15-0+deb13u1"],"id":"tcs_01M5NRXE9TE9Y8TC36WE7422NP","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:13/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"}