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CVE-2026-64646

MEDIUM
6.3
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-64646
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-07-20 17:11 UTC
Published
2026-07-27 18:54 UTC
Last updated
2026-07-27 20:22 UTC
Primary CWE
CWE-770
CWE-770: Allocation of Resources Without Limits or Throttlin…
Vendor / Product
vercel / next.js
Sources
cve.org  ·  NVD

Severity & Metrics

6.3 MEDIUM CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
vercel next.js — >= 13.0.0 < 15.5.21, >= 16.0.0, < 16.2.11
Weakness (CWE)
CWESourceDescription
CWE-770 cna CWE-770: Allocation of Resources Without Limits or Throttling
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.3 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References (5)
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