This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-58250 →
DEBIAN-CVE-2026-58250
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer...
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 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by sending repeated leafnode INFO protocol messages before authentication and account setup completed. This issue is fixed in versions 2.12.8 and 2.11.17.
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":"2.14.1-1"}]}]
References
- advisory security-tracker.debian.org