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, the NATS message header `Nats-Request-Info:` is supposed to be a guarantee of identity by the NATS server, but the stripping of this header from inbound messages was not fully effective. An attacker with valid credentials for any regular client interface could thus spoof their identity to services which rely upon this header. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.

INFO

Published Date :

2026-03-25T20:20:00.158Z

Last Modified :

2026-03-26T17:51:23.590Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33223 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-2026-33223.

URL Resource
https://advisories.nats.io/CVE/secnote-2026-09.txt cve-icon cve-icon cve-icon
https://github.com/nats-io/nats-server/security/advisories/GHSA-pwx7-fx9r-hr4h cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33223 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33223 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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