VULNERABILITY INTELLIGENCE

CVE-2026-33216

CVSS score8.6 HIGH
EPSS probability0.37%
CISA KEVNot currently listed
Published2026-03-25
Last modified2026-09-09
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Description

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, for MQTT deployments using usercodes/passwords: MQTT passwords are incorrectly classified as a non-authenticating identity statement (JWT) and exposed via monitoring endpoints. Versions 2.11.14 and 2.12.6 contain a fix. As a workaround, ensure monitoring end-points are adequately secured. Best practice remains to not expose the monitoring endpoint to the Internet or other untrusted network users.

Weakness classification

  • security-advisories@github.com: CWE-256
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-213

Primary references