Detections
Analytics

SCA: security update for github.com/nats-io/nats-server/v2 (GHSA-8m2x-3m6q-6w8j)

medium Tenable Self-Hosted Container Security Plugin ID 439167

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. Starting
 in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing
 headers can indicate that the trace messages can be sent to an arbitrary valid subject, including those to
 which the client does not have publish permission. The payload is a valid trace message and not chosen by
 the attacker. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.
 (CVE-2026-33249)

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-8m2x-3m6q-6w8j

Plugin Details

Severity: Medium

ID: 439167

Version: Revision 1.9

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: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2026-33249

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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-2026-33249

cwe: CWE-863