CVE-2026-33190

A flaw was found in CoreDNS, a DNS server that chains plugins. An unauthenticated remote client can bypass TSIG Transaction Signature based authentication on non-plain-DNS transports such as DNS over TLS DoT, DNS over HTTPS DoH, DNS over HTTP/3 DoH3, DNS over QUIC DoQ, and gRPC. This bypass occur...

EUVD-2026-27444

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the tsig plugin can be bypassed on non-plain-DNS transports DoT, DoH, DoH3, DoQ, and gRPC because it trusts the transport writer's TsigStatus instead of performing verification itself. The DoH and DoH3 writer's TsigStatus...