Next.js: Denial of Service in App Router using Server Actions
Next.js is a React framework for building full-stack web applications. From 13.0.0 until 15.5.28 and 16.4.1, crafted requests targeting App Router applications with at least one Server Action can cause excessive CPU consumption and block processing of further requests in the same process. Applications using the Pages R…
Severity high: primary CNA CVSS 8.2 v4.0 (worst CNA-provided scenario) Not listed in this KEV snapshot. Forecast present in this snapshot.
Published 2026-10-22T15:22:10.155Z. Updated 2026-10-22T15:22:10.155Z.