Node.js Module Undici 7.x < 7.29.0 / 8.x < 8.9.0 Information Disclosure

critical Nessus Plugin ID 333340

Synopsis

A module in the Node.js JavaScript run-time environment is affected by an information disclosure vulnerability.

Description

The nodejs module Undici detected on the host is version 7.x prior to 7.29.0 or 8.x prior to 8.9.0. It is, therefore, affected by a vulnerability:

- undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and later served to a different caller with the same cache key, disclosing private response bodies and headers including Set-Cookie. Separately, a Cache-Control header that combines an unqualified private directive with a qualified one triggers an uncaught TypeError in the cache-control parser, which rejects the request and, depending on the consumer's error handling, can terminate the process. Both issues affect applications using the cache interceptor in shared mode, including the default configuration. The issues are fixed in undici 7.29.0 and 8.9.0. (CVE-2026-13697)

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 7.29.0 / 8.9.0 or later.

Plugin Details

Severity: Critical

ID: 333340

File Name: nodejs_module_undici_CVE-2026-13697.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 8/7/2026

Updated: 8/7/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.61

CVSS v2

Risk Factor: High

Base Score: 9.4

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

CVSS Score Source: CVE-2026-13697

CVSS v3

Risk Factor: Critical

Base Score: 9.1

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

Vulnerability Information

CPE: cpe:/a:undici:undici

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

Patch Publication Date: 7/29/2026

Vulnerability Publication Date: 7/29/2026

Reference Information

CVE: CVE-2026-13697

IAVB: 2026-B-0220

Detections

Analytics