NATS Server: Queue Subscribe Authz Bypass
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.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-58251US | — | — | ||
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… | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65cFIX
- https://github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1FIX
- https://github.com/nats-io/nats-server/commit/b9ffb63b85e7db3d25a13b2e234f5f7f7c13164dFIX
- https://github.com/nats-io/nats-server/releases/tag/v2.11.16ARTICLE
- https://github.com/nats-io/nats-server/releases/tag/v2.12.7ARTICLE
- https://github.com/nats-io/nats-server/releases/tag/v2.14.0ARTICLE
- https://github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2026-58251WEB
scry
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan