CVE-2026-64641 (GCVE-0-2026-64641)

Vulnerability from cvelistv5 – Published: 2026-07-27 17:40 – Updated: 2026-07-27 18:54
VLAI
Title
Next.js: Denial of Service in App Router using Server Actions
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, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. This issue has been fixed in versions 15.5.21 and 16.2.11.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 18:54 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7886 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
vercel next.js Affected: >= 13.0.0, < 15.5.21
Affected: >= 16.0.0, < 16.2.11
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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