CVE-2026-64646
Next.js: Unbounded Server Action payload in Edge runtime
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | vercel |
| Product | next.js |
| Published | Jul 27, 2026 |
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Affected Versions
vercel / next.js
>= 13.0.0 < 15.5.21 >= 16.0.0, < 16.2.11
References
github.com: https://github.com/vercel/next.js/security/advisories/GHSA-4c39-4ccg-62r3 github.com: https://github.com/vercel/next.js/commit/57c31f724d746e86a9e8b92aa8be538a922446a4 github.com: https://github.com/vercel/next.js/commit/9a4651e754f70b12e397694ffc41f44c3ba8cc17 github.com: https://github.com/vercel/next.js/releases/tag/v15.5.21 github.com: https://github.com/vercel/next.js/releases/tag/v16.2.11