CVE-2026-58251NATS Server: Queue Subscribe Authz Bypass

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322 Vendor Advisory
• https://github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65c Patch
• https://github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1 Patch
• https://github.com/nats-io/nats-server/commit/b9ffb63b85e7db3d25a13b2e234f5f7f7c13164d Patch
• https://github.com/nats-io/nats-server/releases/tag/v2.11.16 Release Notes
• https://github.com/nats-io/nats-server/releases/tag/v2.12.7 Release Notes
• https://github.com/nats-io/nats-server/releases/tag/v2.14.0 Release Notes