CVE-2025-29927 (GCVE-0-2025-29927)

Vulnerability from cvelistv5 – Published: 2025-03-21 14:34 – Updated: 2025-04-08 15:17
VLAI?
Title
Authorization Bypass in Next.js Middleware
Summary
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.
Severity ?
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version
vercel next.js Affected: >= 11.1.4, < 12.3.5
Affected: >= 14.0.0, < 14.2.25
Affected: >= 15.0.0, < 15.2.3
Affected: >= 13.0.0, < 13.5.9
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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