Improper Authorization Affecting github.com/nats-io/nats-server/v2/server package, versions <2.11.16>=2.12.0-RC.1 <2.12.7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMNATSIONATSSERVERV2SERVER-17912784
- published9 Jul 2026
- disclosed8 Jul 2026
- creditXlabAITeam, keenanwgn
Introduced: 8 Jul 2026
CVE-2026-58251 Â (opens in a new tab)How to fix?
Upgrade github.com/nats-io/nats-server/v2/server to version 2.11.16, 2.12.7 or higher.
Overview
github.com/nats-io/nats-server/v2/server is an A simple, secure and performant communications system for digital systems, services and devices.
Affected versions of this package are vulnerable to Improper Authorization via the queue subscription process. An attacker can gain unauthorized access to restricted subjects by leveraging queue subscriptions to bypass subject deny rules when the queue name itself is not denied.