CVE-2026-33218Patch(linuxfoundation / nats-server)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch linuxfoundation nats-server systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-20CWE-1286

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • nats-server

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • 1 total mentions across 1 day

Affected systems

Products
nats-server

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-03-25: 1Patch / Workaround · 2026-03-25: 103-25
Signal classification1 categories
Patch
1100.0%
Referenced assets2 URLs
By indicator
Full discourse1 post
  • CVE@CVEnew
    Patch

    CVE-2026-33218 NATS-Server is a High-Performance server for http://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 th… https://www.cve.org/CVERecord?id=CVE-2026-33218

    Post summary

    CVE-2026-33218 affects NATS‑Server versions prior to 2.11.15 and 2.12.6; a patch is available in those newer releases.

    00000105
    56.8K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Applinuxfoundationnats-server---

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