Detections
Analytics

Next.js Framework 13.4.x < 15.5.16 / 16.x < 16.2.5 Stored XSS

medium Nessus Plugin ID 314907

Synopsis

The Next.js Framework on the remote host is affected by a stored cross-site scripting vulnerability.

Description

The Next.js Framework on the remote host is affected by a stored cross-site scripting vulnerability:

 - App Router applications that rely on CSP nonces can be vulnerable to stored cross-site scripting when deployed behind shared caches. In affected versions, malformed nonce values derived from request headers could be reflected into rendered HTML in an unsafe way, allowing an attacker to poison cached responses and cause script execution for later visitors. (CVE-2026-44581)

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 Next.js Framework version 15.5.16 or 16.2.5 or later.

See Also

http://www.nessus.org/u?6dc8b52f

Plugin Details

Severity: Medium

ID: 314907

File Name: nextjs_framework_CVE-2026-44581.nasl

Version: 1.2

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 5/15/2026

Updated: 5/15/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

CVSS v2

Risk Factor: Medium

Base Score: 4

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

CVSS Score Source: CVE-2026-44581

CVSS v3

Risk Factor: Medium

Base Score: 4.7

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

Vulnerability Information

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

Required KB Items: Host/nodejs/modules/enumerated

Patch Publication Date: 5/11/2026

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-44581

IAVA: 2026-A-0443