{"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_01M5NRXEWQFTBSV2RDV1HS3KZS","modified_at":"2026-10-26T12:02:57.404086139Z","published_at":"2026-06-25T13:16:39.717Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40211","https://security-tracker.debian.org/tracker/CVE-2026-40211"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40211#Debian:13/dnsdist","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40211"}],"summary":"An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on"}