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SCA: security update for github.com/nats-io/nats-server/v2 (GHSA-pwx7-fx9r-hr4h)

medium Tenable Self-Hosted Container Security Plugin ID 439156

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-33223)

Solution

Update the github.com/nats-io/nats-server/v2 library and its related packages to version 2.11.15 or later.

See Also

https://github.com/advisories/GHSA-pwx7-fx9r-hr4h

Plugin Details

Severity: Medium

ID: 439156

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 3/25/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.71

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

CVSS Score Source: CVE-2026-33223

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2026

Vulnerability Publication Date: 3/24/2026

Reference Information

CVE: CVE-2026-33223

cwe: CWE-290