This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-58210 →

DEBIAN-CVE-2026-58210

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, an unauthenticated MQTT...

Original description

The description as published by the source.

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, an unauthenticated MQTT client could cause the server to retain large incomplete MQTT CONNECT packets before authentication completed, consuming server memory while the parser waited for the advertised MQTT packet length. This issue is fixed in versions 2.14.3 and 2.12.12.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 nats-server

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 nats-server

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 nats-server

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.14.3-1"}]}]

References

advisory security-tracker.debian.org