Detections
Analytics

SCA: security update for github.com/nats-io/nats-server/v2 (GHSA-jxxm-27vp-c3m5)

medium Tenable Self-Hosted Container Security Plugin ID 439165

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, when using ACLs on message subjects, these ACLs were not applied in the
 `$MQTT.>` namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects. Versions 2.11.15 and
 2.12.6 contain a fix. No known workarounds are available. (CVE-2026-33217)

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-jxxm-27vp-c3m5

Plugin Details

Severity: Medium

ID: 439165

Version: Revision 1.8

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: 7.79

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-33217

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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-2026-33217

cwe: CWE-863