- Enforced correct ACL behavior: overlapping wildcard deny patterns, leafnode inbound messages, and payload limits are now properly applied.
- Added safeguards for leafnode connections (pre‑CONNECT guard, panic prevention, duplicate INFO handling) and restricted no‑auth user to client connections only.
- WebSocket fast‑path now uses a dedicated no‑auth user when configured.
Release v2.11.16
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Added Leafnodes support with a configurable dial timeout option for high‑latency links
Upgrade to Go 1.25.12 and bump critical dependencies (klauspost/compress v1.19.2, golang.org/x/crypto v0.55.0).
Decoupled Raft transport and increased disk concurrency (now configurable) with several JetStream performance and memory optimizations;