VYPR
Medium severity6.5NVD Advisory· Published Mar 24, 2026· Updated Jun 17, 2026

CVE-2026-33215

CVE-2026-33215

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/nats-io/nats-server/v2Go
< 2.11.152.11.15
github.com/nats-io/nats-server/v2Go
>= 2.12.0-RC.1, < 2.12.62.12.6

Affected products

40

Patches

Vulnerability mechanics

References

5

News mentions

0

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