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NVD HIGH: CVE-2026-64641 — Next.js is a React framework for building full-stack web applications. In versio...

·Source: NIST NVD

Updated:

Executive Summary

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.

Analysis

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. CVSS Score: 7.5. Published: 2026-07-27T18:16:58.850.

Indicators of Compromise (1)

CVE (1)
CVE-2026-64641
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jul 27, 2026. Verified by: NIST.

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