Security Advisory

CVE-2026-58210

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-08 20:13:37

Last updated 2026-07-09 13:29:36

Assigner GitHub_M

CVSS score 7.5

State PUBLISHED

Description

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, an unauthenticated MQTT client could cause the server to retain large incomplete MQTT CONNECT packets before authentication completed, consuming server memory while the parser waited for the advertised MQTT packet length. This issue is fixed in versions 2.14.3 and 2.12.12.

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