CVE-2026-29785

EUVD-2026-15963
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the "leafnode" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used). Versions 2.11.14 and 2.12.5 contain a fix. As a workaround, disable compression on the leafnode port.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 38%
Affected Products (NVD)
VendorProductVersion
linuxfoundationnats-server
𝑥
< 2.11.14
linuxfoundationnats-server
2.12.0 ≤
𝑥
< 2.12.5
𝑥
= Vulnerable software versions
Azure Linux logo
Azure Linux Releases
Azure Package
Release
telegraf
Azure Linux 3.0
0:1.31.0-18.azl3
fixed