GO-2026-6107Published

Unbounded TLS handshake goroutines in go.etcd.io/etcd/client/pkg/v3

Exact source revision recorded 24 Oct 2026 13:19:41 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

osv · GO-2026-6107

Published

In go.etcd.io/etcd/client/pkg/v3 before 3.5.33, 3.6.14, and 3.7.1, TLS handshakes on listeners created by NewTLSListener do not enforce a handshake deadline. An unauthenticated network attacker who connects to an etcd TLS listener without sending a ClientHello causes a goroutine and a tracking map entry to block indefinitely. Opening many such connections exhausts memory, leading to a denial of service.

Source published: 18 Aug 2026 16:38:10 UTC
Source modified: 19 Aug 2026 21:41:59 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

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