Do Son Researchers publicly disclosed a Knot Resolver RCE flaw and PoC exploit code. The DNS-over-QUIC heap overflow hits 6.3.0; update to 6.4.1 now.
DNS-over-QUIC
CoreDNS 1.14.3 addresses 5 critical flaws in DoH, DoQ, and gRPC. Fix authentication bypasses and DoS risks by upgrading your DNS infrastructure today.