NATS Server: Queue Subscribe Authz Bypass
CVE-2026-58251 is fixed in nats-server on 1 platform by DEBIAN-CVE-2026-58251 (version 2.14.1-1), released July 4, 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 2.14.0, 2.12.7, and 2.11.16, an authenticated user with subscription deny permissions could bypass a plain subject deny rule by using a queue subscription, because queue-specific deny evaluation could override the plain subject deny result when the queue name itself was not denied. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| nats-server · Debian 14 | 2.14.1-1 | DEBIAN-CVE-2026-58251 | Jul 4, 2026 |
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