Affected by GO-2022-0368
and 4 other vulnerabilities
GO-2022-0368: Improper random number generation in github.com/coredns/coredns
GO-2024-3130: CoreDNS vulnerable to TuDoor Attacks in github.com/coredns/coredns
GO-2025-3743: CoreDNS Vulnerable to DoQ Memory Exhaustion via Stream Amplification in github.com/coredns/coredns
GO-2025-3942: CoreDNS: DNS Cache Pinning via etcd Lease ID Confusion in github.com/coredns/coredns
GO-2026-4289: CoreDNS gRPC/HTTPS/HTTP3 servers lack resource limits, enabling DoS via unbounded connections and oversized messages in github.com/coredns/coredns
Do executes and returns the results of the given function, making
sure that only one execution is in-flight for a given key at a
time. If a duplicate comes in, the duplicate caller waits for the
original to complete and receives the same results.
Affected by 
Documentation
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Source Files