Next.js Denial of Service (DoS) condition

Answer in brief

CVE-2024-39693 records a High severity (CVSS 7.5) vulnerability in Next.js Denial of Service (DoS) condition. The current sources do not mark it as known exploited. The current feed maps next (npm). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

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

Published Jul 10, 2024Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.5. 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 next (npm). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
nextnpm	>=13.3.1 <13.5.0	13.5.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for next.
Review the reported fix. Update next to 13.5.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jul 10, 2024
Evidence: source:osv:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

### Impact A Denial of Service (DoS) condition was identified in Next.js. Exploitation of the bug can trigger a crash, affecting the availability of the server. **This vulnerability can affect all Next.js deployments on the affected versions.** ### Patches This vulnerability was resolved in Next.js 13.5 and later. We recommend that users upgrade to a safe version. ### Workarounds There are no official workarounds for this vulnerability. #### Credit * Thai Vu of [flyseccorp.com](http://flyseccorp.com/) * Aonan Guan (@0dd), Senior Cloud Security Engineer

Quoted source text, attributed separately from HOL analysis.