{"action":"Upgrade pdns-recursor to 5.2.12-0+deb13u1 or later.","affected":[{"fixed":"5.2.12-0+deb13u1","introduced":"0"}],"component":"pdns-recursor","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["5.2.12-0+deb13u1"],"id":"tcs_01M5NSQX39WV8W4AGSAJMM8QSA","modified_at":"2026-10-25T10:00:35.586492970Z","published_at":"2026-07-23T09:16:26.967Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-52686","https://security-tracker.debian.org/tracker/CVE-2026-52686"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-52686#Debian:13/pdns-recursor","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-52686"}],"summary":"The issue is a DNSSEC validation bypass where wildcard expansion proofs (NSEC/NSEC3 records) are accepted without signature validation when the wildcard answer is a CNAME or DNAME record."}