{"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_01M5NRZPFC4NYCDPW1GHXB74JJ","modified_at":"2026-10-26T12:01:03.832010946Z","published_at":"2026-06-25T13:16:40.547Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-42004","https://security-tracker.debian.org/tracker/CVE-2026-42004"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-42004#Debian:14/dnsdist","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-42004"}],"summary":"An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend t"}