PT-2026-76161 · Julia · Nats Server Jll

Published

2026-08-03

·

Updated

2026-08-03

CVSS v3.1

6.5

Medium

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. The nats-server provides an MQTT client interface. Prior to versions 2.11.15 and 2.12.5, Sessions and Messages can by hijacked via MQTT Client ID malfeasance. Versions 2.11.15 and 2.12.5 patch the issue. No known workarounds are available.

Fix

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Related Identifiers

JLSEC-2026-1123

Affected Products

Nats Server Jll