CVE-2026-33215 — NATS is vulnerable to MQTT hijacking via Client ID
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 …
Published: 2026-03-24 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7