A high-severity vulnerability (CVE-2025-47950) in CoreDNS’s DNS-over-QUIC (DoQ) implementation enables remote attackers to crash DNS servers through stream amplification attacks. Patched in v1.21.2, this flaw highlights risks in modern protocol adoption for cloud-native systems Goroutine Proliferation in DoQ Implementation The vulnerability stems from CoreDNS’s handling of QUIC streams in its server_quic.go component. For every incoming […]

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