CVE-2025-57822
Next.js Improper Middleware Redirect Handling Leads to SSRF
Description
A vulnerability in **Next.js Middleware** has been fixed in **v14.2.32** and **v15.4.7**. The issue occurred when request headers were directly passed into `NextResponse.next()`. In self-hosted applications, this could allow Server-Side Request Forgery (SSRF) if certain sensitive headers from the incoming request were reflected back into the response. All users implementing custom middleware logic in self-hosted environments are strongly encouraged to upgrade and verify correct usage of the `next()` function. More details at [Vercel Changelog](https://vercel.com/changelog/cve-2025-57822)
How to fix CVE-2025-57822
To remediate CVE-2025-57822, upgrade the affected package to a fixed version below.
- —upgrade to 14.2.32 or later
Is CVE-2025-57822 being exploited?
Moderate — EPSS is 7.8%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- >= 0.9.9, < 14.2.32
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |