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npm

CVE-2026-64646

Next.js: Unbounded Server Action payload in Edge runtime

Severity
Medium
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-4c39-4ccg-62r3
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