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Advisory record · GHSA-4c39-4ccg-62r3

Next.js: Unbounded Server Action payload in Edge runtime

CVSS 6.3 MediumEPSS 0.0052 · 45th percentile

Published by the GitHub Advisory Database at 22 Jul 2026, 23:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
nextnpm>=13.0.0, <15.5.21 || >=16.0.0, <16.2.1115.5.21, 16.2.11
Identifiers
GHSA-4c39-4ccg-62r3 · CVE-2026-64646
Weakness (CWE)
CWE-770
Tags
Published
22 Jul 2026
Updated
10 Sept 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.3 Medium 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 CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0052, the 45th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 21 Jul 2026, 16:02 UTC Published by the maintainers as a GitHub repository advisory

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.