Improper Authorization Affecting nats-server package, versions <2.12.7-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.46% (39th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-NATSSERVER-17973358
  • published15 Jul 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

CVE-2026-58251  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

Upgrade Minimos:latest nats-server to version 2.12.7-r0 or higher.

NVD Description

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

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user with subscription deny permissions could bypass a plain subject deny rule by using a queue subscription, because queue-specific deny evaluation could override the plain subject deny result when the queue name itself was not denied. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.

CVSS Base Scores

version 3.1