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 Router and App Router applications without Server Actions are not affected. This issue is fixed in versions 15.5.28 and 16.4.1.
CVE-2026-94482
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-94482
next.js
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "vercel",
"product": "next.js",
"versions": [
{
"status": "affected",
"version": ">= 13.0.0, < 15.5.28"
},
{
"status": "affected",
"version": ">= 16.0.0, < 16.4.1"
}
]
}
]- Related CVEs
- CVE-2026-94482
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #50381 · Revision 1
- Added to Heist Feed
- Publisher date