6.5
Medium
CVE-2026-33215 NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| nats-server 2.12 | 2.12.0-RC.1 → < 2.12.6 | 2.12.6 |
| nats-server 2.11 | earliest → < 2.11.15 | 2.11.15 |
References
- github.com github.com
- advisories.nats.io advisories.nats.io
Timeline
- Published
- Last modified
Other CVEs of nats-server
The 27 CVEs of nats-server →
CVE-2026-58208
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
6.8
Medium
CVE-2026-58211
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
5.4
Medium
CVE-2026-58207
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
7.7
High
CVE-2026-58210
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
7.5
High