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.

Scores

Faiblesses (CWE)

• CWE-770

Avis

• GHSA-4c39-4ccg-62r3 — Next.js: Unbounded Server Action payload in Edge runtime

Références européennes

• ENISA EUVD · EUVD-2026-49401
• GCVE · GCVE-0-2026-64646

Avis du CERT-FR

• CERTFR-2026-AVI-1291 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2026-AVI-1256 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

• cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* ≥ 13.0.0 < 15.5.21
• cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* ≥ 16.0.0 < 16.2.11

Produits affectés

Références

• https://github.com/vercel/next.js/security/advisories/GHSA-4c39-4ccg-62r3
• https://github.com/vercel/next.js/commit/57c31f724d746e86a9e8b92aa8be538a922446a4
• https://github.com/vercel/next.js/commit/9a4651e754f70b12e397694ffc41f44c3ba8cc17
• https://github.com/vercel/next.js/releases/tag/v15.5.21
• https://github.com/vercel/next.js/releases/tag/v16.2.11

Sources