{"action":"Upgrade unbound to 1.26.1-0+deb13u1 or later.","affected":[{"fixed":"1.26.1-0+deb13u1","introduced":"0"}],"component":"unbound","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.26.1-0+deb13u1"],"id":"tcs_01M5NT1VD8WSQ9KWZWRWS906SP","modified_at":"2026-10-01T03:03:27.066761981Z","published_at":"2026-07-22T14:17:22.203Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-56444","https://security-tracker.debian.org/tracker/CVE-2026-56444"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-56444#Debian:13/unbound","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-56444"}],"summary":"In NLnet Labs Unbound 1.20.0 up to and including 1.25.1, when Unbound is configured with 'serve-expired: yes' and 'serve-expired-client-timeout > discard-timeout > 0' (contrary to the suggested values"}