CVE-2026-64646 — Next.js: Unbounded Server Action payload in Edge runtime
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 usi…
Published: 2026-07-27 · CVSS: 6.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7