nats-server: NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
CVE-2026-58211 is fixed in nats-server on 1 platform by DEBIAN-CVE-2026-58211 (version 2.14.3-1), released July 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, a client could be registered as the configured no_auth_user through a parser path used when the first client operation was not CONNECT, bypassing user-level connection restrictions such as allowed_connection_types or proxy_required that normal authentication would apply. This issue is fixed in versions 2.14.3 and 2.12.12.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| nats-server · Debian 14 | 2.14.3-1 | DEBIAN-CVE-2026-58211 | Jul 6, 2026 |
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