Incorrect Authorization Affecting github.com/nats-io/nats-server/server package, versions >=0.0.0
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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- published9 Jul 2026
- disclosed8 Jul 2026
- credit0xasritha
Introduced: 8 Jul 2026
CVE-2026-58209 (opens in a new tab)How to fix?
There is no fixed version for github.com/nats-io/nats-server/server.
Overview
github.com/nats-io/nats-server/server is an A simple, secure and performant communications system for digital systems, services and devices.
Affected versions of this package are vulnerable to Incorrect Authorization in the MQTT retained message delivery and QoS1+ durable replay process. An attacker can receive messages that should have been denied by subscribe filters by exploiting the lack of consistent rechecking of the original topic before message delivery.