UpHeron
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npm

CVE-2026-64641

Next.js: Denial of Service in App Router using Server Actions

Severity
High
Published
22 Jul 2026
Last changed
10 Sept 2026
Added to UpHeron
14 Oct 2026
Fixed in
15.5.21, 16.2.11
Also known as
GHSA-m99w-x7hq-7vfj
Sources
OSV.dev and GitHub

Affected software

SoftwareAffected versions
Next.jsnpm · osv:npm:next
  • From 13.0.0 before 15.5.21
  • From 16.0.0 before 16.2.11

References