{"action":"Upgrade pdns-recursor to 5.4.3-1 or later.","affected":[{"fixed":"5.4.3-1","introduced":"0"}],"component":"pdns-recursor","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["5.4.3-1"],"id":"tcs_01M5NS0DWPJ6S3Y3M28M9XHZNG","modified_at":"2026-10-26T12:01:09.859592067Z","published_at":"2026-06-25T14:16:39.447Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-42387","https://security-tracker.debian.org/tracker/CVE-2026-42387"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-42387#Debian:14/pdns-recursor","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-42387"}],"summary":"A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation."}