SSRF in Vercel Next.js
CVE-2025-57822
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.025 (84.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- Vercel Next.js — versions < 14.2.32, < 15.4.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/vercel/next.js/security/advisories/GHSA-4342-x723-ch2f (Vendor Advisory)
- github.com/vercel/next.js/commit/9c9aaed5bb9338ef31b0517ccf0ab4414f2093d8 (Patch)
- vercel.com/changelog/cve-2025-57822 (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-57822?
- CVE-2025-57822 is a medium-severity vulnerability in Vercel Next.js, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2025-08-29.
- How severe is CVE-2025-57822?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-57822 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.