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CVE-2026-33223

nvd nist
Published: Mar 25, 2026Modified: Jun 17, 2026

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5.4
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Exploitability: 2.8 / Impact: 2.5
Source: 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, 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.

Affected (2)

Nats Server
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Linuxfoundation
Before 2.11.15
From 2.12.0 to 2.12.6

References (2)

Source: security-advisories@github.com
Vendor Advisory
Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.