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CVE-2026-94482

Next.js: Denial of Service in App Router using Server Actions

HIGH
8.2
CVSS Score
Published: October 22, 2026 at 03:22 PM UTC
Updated: October 22, 2026 at 05:29 PM UTC
1 product affected across 1 vendorNext.js

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Severity
HIGH8.2
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Next.js· Vercelnpm
90%
>= 13.0.0, < 15.5.28>= 16.0.0, < 16.4.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_CONFIRM
Source: cverecord
https://github.com/vercel/next.js/security/advisories/GHSA-p3m5-59mp-jv5r
x_refsource_MISC
Source: cverecord
https://github.com/vercel/next.js/releases/tag/v15.5.28
x_refsource_MISC
Source: cverecord
https://github.com/vercel/next.js/releases/tag/v16.4.1

CVSS

8.2HIGHGitHub_M
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-770

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