Node.js Module Undici 6.17.x < 6.27.0 / 7.x < 7.28.0 / 8.x < 8.5.0 DoS (CVE-2026-12151)

high Nessus Plugin ID 322409

Language:

Synopsis

A module in the Node.js JavaScript run-time environment is affected by a denial of service vulnerability.

Description

The nodejs module Undici detected on the host is version 6.17.x prior to 6.27.0, 7.x prior to 7.28.0, or 8.x prior to 8.5.0. It is, therefore, affected by a denial of service vulnerability:

- The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. (CVE-2026-12151)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Undici version 6.27.0 / 7.28.0 / 8.5.0 or later.

Plugin Details

Severity: High

ID: 322409

File Name: nodejs_module_undici_CVE-2026-12151.nasl

Version: 1.2

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 6/24/2026

Updated: 6/25/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2026-12151

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

CPE: cpe:/a:undici:undici

Required KB Items: installed_sw/Node.js, Host/nodejs/modules/enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 6/17/2026

Vulnerability Publication Date: 6/17/2026

Reference Information

CVE: CVE-2026-12151

Detections

Analytics