Next.js: Denial of Service in App Router using Server Actions

CAO 7.5CVE-2026-64641 · GHSA-m99w-x7hq-7vfj · Công bố 27/07/2026 · cập nhật 24/10/2026

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
next.js vercel	`≥ 13.0.0, < 15.5.21≥ 16.0.0, < 16.2.11`	`15.5.2116.2.11`
next npm	`≥ 13.0.0, < 15.5.21≥ 16.0.0, < 16.2.11`	`15.5.2116.2.11`

Mô tả

Impact

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.

Workarounds

No workaround exists besides upgrading. Applications using Pages Router or not using Server Actions are not vulnerable.

Mô tả của NVD

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.

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