🛡️ CVE-2025-29927
🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-285 NVD
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Next.js is a React framework for building full-stack web applications. Starting in version 1.11.4 and prior to versions 12.3.5, 13.5.9, 14.2.25, and 15.2.3, it is possible to bypass authorization checks within a Next.js application, if the authorization check occurs in middleware. If patching to a safe version is infeasible, it is recommend that you prevent external user requests which contain the x-middleware-subrequest header from reaching your Next.js application. This vulnerability is fixed in 12.3.5, 13.5.9, 14.2.25, and 15.2.3.

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE CWE-285
Public Exploit ✅ No
Source NVD
Published 2025-03-21
Updated 2026-06-02
Modified 2026-03-04

Affected Packages

Software From version Fixed in
next — —
next.js 15.0.0 15.2.3

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