CVE-2026-123606High· 7.5▾ TwilightThe hickory-dns recursor in hickory-recursor 0.25.0-alpha.3 through 0.25.2 and hickory-resolver 0.26.0-alpha.1 before 0.26.2 iterates every out-of-bailiwick NS target lacking glue in a referral without any per-query work budget. Remote a…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0 · exploitation 0
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The hickory-dns recursor in hickory-recursor 0.25.0-alpha.3 through 0.25.2 and hickory-resolver 0.26.0-alpha.1 before 0.26.2 iterates every out-of-bailiwick NS target lacking glue in a referral without any per-query work budget. Remote attackers can serve such referrals to force A and AAAA lookups per target, amplifying traffic against remote servers or exhausting recursor resources.
hickory-dns >= 0.25.0-alpha.3 <= 0.25.2hickory-dns >= 0.26.0-alpha.1 < 0.26.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-123570High· 7.5Hickory DNS from 0.18 before 0.26.2 Memory Amplification DoS via RR Counts
CVE-2026-123586High· 7.5Hickory DNS 0.25.0-alpha.3 through 0.25.2 Query Amplification via Cyclic Referrals
CVE-2026-123585Medium· 5.3Hickory DNS 0.25.0 before 0.26.2 Query Amplification via Irrelevant CNAME Records
CVE-2026-123576High· 7.5Hickory DNS 0.24.0 through 0.26.1 Memory Exhaustion via DNS-over-QUIC Requests
CVE-2026-123571High· 7.5Hickory DNS from 0.26.0 before 0.26.2 Panic via TSIG RDATA Decoding
CVE-2026-123572High· 7.5Hickory-dns 0.20.1 before 0.26.2 Panic DoS via SVCB/HTTPS Zone Parser