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Back to active CVEs
High · CVSS 8.2CVE-2026-94482GHSA-P3M5-59MP-JV5R

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

Answer in brief

CVE-2026-94482 records a High severity (CVSS 8.2) vulnerability in Next.js: Denial of Service in App Router using Server Actions. The current sources do not mark it as known exploited. The current feed maps vercel/next.js (generic), next (npm), next (npm), next (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 22, 2026Updated Oct 22, 2026Source checked Oct 22, 2026First seen by HOL Oct 22, 2026Material review Oct 22, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.2
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps vercel/next.js (generic), next (npm), next (npm), next (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
vercel/next.jsgeneric>=13.0.0 <15.5.28 || >=16.0.0 <16.4.115.5.28, 16.4.1
nextnpm>=13.0.0,<=15.5.2715.5.28
nextnpm>=16.0.0,<=16.4.016.4.1
nextnpm>=13.0.0 <15.5.2815.5.28
nextnpm>=16.0.0 <16.4.116.4.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for vercel/next.js, next, next.
  2. 2Review the reported fix. Update vercel/next.js to 15.5.28; next to 15.5.28; next to 16.4.1; next to 15.5.28; next to 16.4.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 22, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • fpdf2: Exponential SVG '<use>' expansion causes CPU and memory exhaustion in 'FPDF.image()'Also CWE-770
  • Large tables in data apps can bring down execution services in KNIME HubAlso CWE-770
  • GraphQL-core: Denial of service via comment tokens bypassing the parser's max_tokens limitAlso CWE-770
  • GraphQL Tools: Prototype pollution in mergeIncrementalResult via non-primitive path segmentsSame npm ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-770
Source
CVE List V5
Source checked
Oct 22, 2026
References
5 linked sources
Open source record