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7.1 High

CVE-2026-58213 NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system

Description

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.1 and 2.12.9, an MQTT client could include protocol control characters in subscription filters that were later forwarded as NATS protocol data to route or leafnode connections, corrupting the forwarded protocol stream and allowing injection of unintended NATS protocol operations. This issue is fixed in versions 2.14.1 and 2.12.9.

Affected products and versions

Product Affected versions Fixed in
nats-server 2.14 2.14.0-RC.1 → < 2.14.1 2.14.1
nats-server 2.12 earliest → < 2.12.9 2.12.9

References

Timeline

  1. Published
  2. 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
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