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.

INFO

Published Date :

2026-03-25T19:53:12.075Z

Last Modified :

2026-03-26T15:37:59.614Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33218 vulnerability.

Vendors Products
Linuxfoundation
  • Nats-server
Nats
  • Nats Server
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33218.

URL Resource
https://advisories.nats.io/CVE/secnote-2026-10.txt cve-icon cve-icon cve-icon
https://github.com/nats-io/nats-server/security/advisories/GHSA-vprv-35vv-q339 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33218 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33218 cve-icon
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CVSS Vulnerability Scoring System

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