Next.js Framework 16.x < 16.2.11 Middleware Bypass

critical Nessus Plugin ID 330087

Synopsis

The Next.js Framework on the remote host is affected by an authentication bypass vulnerability.

Description

The Next.js Framework on the remote host is affected by an authentication bypass vulnerability:

- Crafted requests targeting Next.js applications using App Router built with Turbopack and a single entry in config.i18n.locales can bypass middleware/proxy based authentication. (CVE-2026-64642)

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

Solution

Upgrade to Next.js Framework version 16.2.11 or later.

Plugin Details

Severity: Critical

ID: 330087

File Name: nextjs_framework_CVE-2026-64642.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 7/27/2026

Updated: 7/27/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.74

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS Score Source: CVE-2026-64642

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: cpe:/a:vercel:next.js

Required KB Items: Host/nodejs/modules/enumerated

Patch Publication Date: 7/22/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-64642

IAVA: 2026-A-0765

Detections

Analytics