Vulnerabilities CVE-2026-64646

CVE-2026-64646

Medium

Open

TLP:CLEAR

Next.js: Unbounded Server Action payload in Edge runtime

NVD CVE.org

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Description

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, requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive memory consumption if that Server Actions uses the Edge runtime. This issue has been fixed in versions 15.5.21 and 16.2.11.

Details

CVSS Score: 6.3
EPSS Score ⓘ: 0.53%

42.4th percentile
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Confidence: 90%
Published: Jul 27, 2026
Last Modified: Jul 27, 2026

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