high7.5
CVE-2026-64641
Next.js is a React framework for building full-stack web applications.
Impact
Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. This issue has been fixed in versions 15.5.21 and 16.2.11.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | next | >= 13.0.0, < 15.5.21 | 15.5.21 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Vercel | Next.Js | from 13.0.0 before 15.5.21 from 16.0.0 before 16.2.11 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-m99w-x7hq-7vfj
- https://github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj
- https://github.com/vercel/next.js/pull/96013
- https://github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12
- https://github.com/vercel/next.js/releases/tag/v15.5.21
- https://github.com/vercel/next.js/releases/tag/v16.2.11