Bug 2451448 (CVE-2026-33216) - CVE-2026-33216 nats-server: github.com/nats-io/nats-server: NATS-Server: Information disclosure of MQTT passwords through monitoring endpoints
Summary: CVE-2026-33216 nats-server: github.com/nats-io/nats-server: NATS-Server: Info...
Keywords:
Status: NEW
Alias: CVE-2026-33216
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2451497
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-25 20:02 UTC by OSIDB Bzimport
Modified: 2026-03-25 21:17 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-03-25 20:02:27 UTC 
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.
Note You need to log in before you can comment on or make changes to this bug.