NATS has pre-auth server panic via leafnode handling
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 0.6%
probabilidad de explotación
0.6%top 54% de las CVE
explotación observada
noninguna fuente lo reporta
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, a client which can connect to the leafnode port can crash the nats-server with a certain malformed message pre-authentication. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, disable leafnode support if not needed or restrict network connections to the leafnode port, if plausible without compromising the service offered.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
nats-io · nats-serverReferencias
https://access.redhat.com/errata/RHSA-2026:21769https://access.redhat.com/errata/RHSA-2026:22347https://access.redhat.com/errata/RHSA-2026:23345https://access.redhat.com/security/cve/CVE-2026-33218https://advisories.nats.io/CVE/secnote-2026-10.txthttps://bugzilla.redhat.com/show_bug.cgi?id=2451450https://github.com/nats-io/nats-server/security/advisories/GHSA-vprv-35vv-q339https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33218.json