CoreDNS DoH/DoQ/gRPC bypass UPDATE rejection enforced on UDP/TCP
High-risk advisory
CVE-2026-86003
Summary
CoreDNS DoH/DoQ/gRPC bypass UPDATE rejection enforced on UDP/TCP
Why it matters
GitHub has published a reviewed security advisory for github.com/coredns/coredns. Prioritize it with other application dependency updates.
Operator check
Check whether github.com/coredns/coredns is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.