Detections
Analytics

SCA: security update for github.com/nats-io/nats-server/v2 (GHSA-vprv-35vv-q339)

high Tenable Self-Hosted Container Security Plugin ID 439161

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, a client which can connect to the leafnode port can crash the nats-server
 with a certain malformed message pre-authentication. Versions 2.11.15 and 2.12.6 contain a fix. As a
 workaround, disable leafnode support if not needed or restrict network connections to the leafnode port,
 if plausible without compromising the service offered. (CVE-2026-33218)

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-vprv-35vv-q339

Plugin Details

Severity: High

ID: 439161

Version: Revision 1.5

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: Medium

Score: 5

Percentile: 94.16

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-33218

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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-2026-33218

cwe: CWE-20