CVE-2025-29927
Authorization Bypass in Next.js Middleware
- State
- Published
- Severity
- 9.1 Critical
- Published
- Mar 21, 2025
- Updated
- Apr 8, 2025
- Reserved
- Mar 12, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | GitHub_M |
Weaknesses
- CWE-285 Improper Authorization
Affected Products
| Product | Versions |
|---|---|
next.jsvercel |
|
References
- https://github.com/vercel/next.js/security/advisories/GHSA-f82v-jwr5-mffw
- https://github.com/vercel/next.js/commit/52a078da3884efe6501613c7834a3d02a91676d2
- https://github.com/vercel/next.js/commit/5fd3ae8f8542677c6294f32d18022731eab6fe48
- https://github.com/vercel/next.js/releases/tag/v12.3.5
- https://github.com/vercel/next.js/releases/tag/v13.5.9
- http://www.openwall.com/lists/oss-security/2025/03/23/3
- http://www.openwall.com/lists/oss-security/2025/03/23/4
- https://security.netapp.com/advisory/ntap-20250328-0002/
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