Next.js is a React framework for building full-stack web applications. Prior to versions 14.2.32 and 15.4.7, when next() was used without explicitly passing the request object, it could lead to SSRF in self-hosted applications that incorrectly forwarded user-supplied headers. This vulnerability has been fixed in Next.js versions 14.2.32 and 15.4.7. All users implementing custom middleware logic in self-hosted environments are strongly encouraged to upgrade and verify correct usage of the next() function.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| next(npm) | 0.9.9 | 14.2.32 | N/A |
| next(npm) | 15.0.0-canary.0 | 15.4.7 | N/A |
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