CVE-2026-64646
MEDIUM severity · CVSS 5.3 · Resource exhaustion
5.3CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactLow
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://github.com/vercel/next.js/commit/57c31f724d746e86a9e8b92aa8be538a922446a4 ↗
Additional information
- NVD record
- https://github.com/vercel/next.js/commit/57c31f724d746e86a9e8b92aa8be538a922446a4Patch
- https://github.com/vercel/next.js/commit/9a4651e754f70b12e397694ffc41f44c3ba8cc17Patch
- https://github.com/vercel/next.js/security/advisories/GHSA-4c39-4ccg-62r3Advisory
- https://github.com/vercel/next.js/releases/tag/v15.5.21
- https://github.com/vercel/next.js/releases/tag/v16.2.11