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CVE-2026-64646 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/vercel/next.js/commit/57c31f724d746e86a9e8b92aa8be538a922446a4	[email protected]	Patch
https://github.com/vercel/next.js/commit/9a4651e754f70b12e397694ffc41f44c3ba8cc17	[email protected]	Patch
https://github.com/vercel/next.js/releases/tag/v15.5.21	[email protected]	ProductRelease Notes
https://github.com/vercel/next.js/releases/tag/v16.2.11	[email protected]	ProductRelease Notes
https://github.com/vercel/next.js/security/advisories/GHSA-4c39-4ccg-62r3	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-770	Allocation of Resources Without Limits or Throttling	[email protected]

Affected Products

Product	Versions
vercel next.js	>= 13.0.0, < 15.5.21 >= 16.0.0, < 16.2.11
CPE cpe:2.3:a:vercel:next.js::::::node.js::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Jul 29, 2026	Initial Analysis	[email protected]
Jul 27, 2026	CVE Modified	CISA-ADP
Jul 27, 2026	New CVE Received	[email protected]