CVE-2026-94482: Next.js: Denial of Service in App Router using Server Actions

October 22, 2026

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.

References

github.com/advisories/GHSA-p3m5-59mp-jv5r
github.com/vercel/next.js/releases/tag/v15.5.28
github.com/vercel/next.js/releases/tag/v16.4.1
github.com/vercel/next.js/security/advisories/GHSA-p3m5-59mp-jv5r
nvd.nist.gov/vuln/detail/CVE-2026-94482

Code Behaviors & Features

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