{"action":"Upgrade pdns-recursor to 5.2.9-0+deb13u1 or later.","affected":[{"fixed":"5.2.9-0+deb13u1","introduced":"0"}],"component":"pdns-recursor","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["5.2.9-0+deb13u1"],"id":"tcs_01M5NRQG2SKXBYMM2HYSV28VH3","modified_at":"2026-10-27T10:00:56.268055737Z","published_at":"2026-04-22T10:16:51.857Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-33261","https://security-tracker.debian.org/tracker/CVE-2026-33261"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-33261#Debian:13/pdns-recursor","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-33261"}],"summary":"A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service."}