Improper Neutralization Affecting nats-server2.12 package, versions <0:2.12.12-1.hum1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.44% (37th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL10-NATSSERVER212-19214014
  • published23 Aug 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

CVE-2026-58213  (opens in a new tab)
CWE-140  (opens in a new tab)

How to fix?

Upgrade RHEL:10 nats-server2.12 to version 0:2.12.12-1.hum1 or higher.
This issue was patched in RHSA-2026:36017.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nats-server2.12 package and not the nats-server2.12 package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1