CVE-2026-93657: Hickory-DNS Hickory-Resolver

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup() and Resolver::lookup_ip() APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged DNS records accepted as validated, bypassing DNSSEC authentication checks.

Affected products

• Hickory-DNS Hickory-Resolver: before 0.26.2 (fixed in 0.26.2)

Published 2026-09-18. Last modified 2026-09-22.