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Rfc-2136

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CoreDNS DoH/DoQ/gRPC RFC 2136 UPDATE Bypass

CoreDNS versions up to 1.14.6 fail to validate DNS UPDATE opcodes over DoH, DoH3, DoQ, and gRPC, allowing attackers to relay unauthorized updates to upstream servers.

CoreDNS dns vulnerability rfc-2136 denial-of-service cve-2026-82399 networking

1r 3t 1c 1d ago