CVE-2026-29785Patch(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 2.11.14 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-476CWE-409

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
  • Technical details provided 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: 1Technical Details · 2026-03-25: 103-25
Signal classification1 categories
Patch
1100.0%
Referenced assets2 URLs
By indicator
Full discourse1 post
  • CVE@CVEnew
    Patch

    CVE-2026-29785 NATS-Server is a High-Performance server for http://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 "leaf… https://www.cve.org/CVERecord?id=CVE-2026-29785

    Post summary

    The text announces the CVE and provides patch information via version updates, offering a clear mitigation path for affected users.

    00000112
    56.8K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Applinuxfoundationnats-server---

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