Description (CNA)
Next.js is a React framework for building full-stack web applications. To mitigate CVE-2025-29927, Next.js validated the x-middleware-subrequest-id which persisted across multiple incoming requests. However, this subrequest ID is sent to all requests, even if the destination is not the same host as the Next.js application. Initiating a fetch request to a third-party within Middleware will send the x-middleware-subrequest-id to that third party. This vulnerability is fixed in 12.3.6, 13.5.10, 14.2.26, and 15.2.4.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| vercel / next.js | affected = 12.3.5; affected = 13.5.9; affected = 14.2.25; affected = 15.2.3 |
CWE
CWE-200
References
- https://github.com/vercel/next.js/security/advisories/GHSA-223j-4rm8-mrmf
- https://vercel.com/changelog/cve-2025-30218-5DREmEH765PoeAsrNNQj3O
ADP enrichment
No English description supplied.
No references supplied.