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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-64646

Next.js: Unbounded Server Action payload in Edge runtime

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

vercel next.js

  • >= 13.0.0 < 15.5.21affected
  • >= 16.0.0, < 16.2.11affected

References