Improper Authentication Affecting nats package, versions <0.3.2-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.01% (4th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-NATS-15801763
  • published28 Mar 2026
  • disclosed24 Mar 2026

Introduced: 24 Mar 2026

NewCVE-2026-33215  (opens in a new tab)
CWE-287  (opens in a new tab)
CWE-488  (opens in a new tab)

How to fix?

Upgrade Chainguard nats to version 0.3.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nats package and not the nats package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1