CVE-2025-57822

moderate-risk
Published 2025-08-29

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.

Do I need to act?

~
5.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Vercel

References (3)

Patch https://github.com/vercel/next.js/commit/9c9aaed5bb9338ef31b0517ccf0ab4414f2093d...
Vendor Advisory https://github.com/vercel/next.js/security/advisories/GHSA-4342-x723-ch2f
Mitigation https://vercel.com/changelog/cve-2025-57822
34
/ 100
moderate-risk
Severity 20/34 · Moderate
Exploitability 9/34 · Low
Exposure 5/34 · Minimal