CVE-2026-58213NATS Server: MQTT SUBSCRIBE Protocol Injection via Leaf Node/Route Forwarding allows arbitrary NATS command injection

Descripción

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.1 and 2.12.9, an MQTT client could include protocol control characters in subscription filters that were later forwarded as NATS protocol data to route or leafnode connections, corrupting the forwarded protocol stream and allowing injection of unintended NATS protocol operations. This issue is fixed in versions 2.14.1 and 2.12.9.

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-qrcv-3558-gj4f Vendor Advisory
• https://github.com/nats-io/nats-server/pull/8163 Issue TrackingPatch
• https://github.com/nats-io/nats-server/pull/8164 Issue TrackingPatch
• https://github.com/nats-io/nats-server/commit/366837cfc65ab9ccb4f98193c65e8daf238582d8 Patch
• https://github.com/nats-io/nats-server/commit/64ebae40051ee497c481e10f316238faf0de1736 Patch
• https://github.com/nats-io/nats-server/commit/f14856b9e57a36818f43851cb69b6e33670885c9 Patch
• https://github.com/nats-io/nats-server/releases/tag/v2.12.9 Release Notes
• https://github.com/nats-io/nats-server/releases/tag/v2.14.1 Release Notes