CVE-2024-56332: Next Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-7m27-7ghc-44w9
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CVSS 5.3
CWE-770
Published
Advisory Summary

CVE-2024-56332 is a MODERATE (CVSS 5.3) denial of service vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Next libraries in the npm ecosystem. The issue involves next.js allows a denial of service (dos) with server actions. Remediation is available by upgrading affected packages to version 13.5.8, 14.2.21, 15.1.2.

CVE-2024-56332 at a Glance

CVE Identifier CVE-2024-56332
GHSA Identifier GHSA-7m27-7ghc-44w9
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Next
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability Low (A:L)

How to Fix CVE-2024-56332

To remediate this vulnerability, upgrade all affected Next dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

next fixed: 13.5.8 
npm install next@13.5.8
next fixed: 14.2.21 
npm install next@14.2.21
next fixed: 15.1.2 
npm install next@15.1.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls next

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2024-56332, inspect your project dependencies using npm:

npm ls next

Analyze the terminal output to locate any version of Next in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 13.5.8), your application is affected.

Note: The npm ls next command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Next, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact A Denial of Service (DoS) attack allows attackers to construct requests that leaves requests to Server Actions hanging until the hosting provider cancels the function execution. _Note: Next.js server is idle during that time and only keeps the connection open. CPU and memory footprint are low during that time._ Deployments without any protection against long running Server Action invocations are especially vulnerable. Hosting providers like Vercel or Netlify set a default maximum duration on function execution to reduce the risk of excessive billing. This is the same issue as if the incoming HTTP request has an invalid `Content-Length` header or never closes. If the host has no other mitigations to those then this vulnerability is novel. This vulnerability affects only Next.js deployments using Server Actions. ### Patches This vulnerability was resolved in Next.js 14.2.21, 15.1.2, and 13.5.8. We recommend that users upgrade to a safe version. ### Workarounds There are no official workarounds for this vulnerability. ### Credits Thanks to the PackDraw team for responsibly disclosing this vulnerability.

CVE-2024-56332 Affected Next Versions

3 component(s)
Fixed Versions:
13.5.814.2.2115.1.2
Product / Package Ecosystem Affected Versions Fixed Version
next
npm/next
npm
≥ 13.0.0
< 13.5.8
13.5.8
next
npm/next
npm
≥ 14.0.0
< 14.2.21
14.2.21
next
npm/next
npm
≥ 15.0.0
< 15.1.2
15.1.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vercel/next.js/security/advisories/GHSA-7m27-7ghc-44w9
NVD — CVE-2024-56332 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-56332
Next Source Repository REPOSITORY
https://github.com/vercel/next.js

Frequently Asked Questions

What is CVE-2024-56332?
CVE-2024-56332 is a security vulnerability in Next involving Next.js Allows a Denial of Service (DoS) with Server Actions under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Next versions are affected?
Affected versions include releases prior to 13.5.8, 14.2.21, 15.1.2 across affected packages: next.
What version fixes CVE-2024-56332?
Upgrading to 13.5.8, 14.2.21, 15.1.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is next affected?
Yes, next is affected in releases prior to 13.5.8, 14.2.21, 15.1.2. Upgrade your dependency to 13.5.8, 14.2.21, 15.1.2 or later.
What is the CVSS score of CVE-2024-56332?
CVE-2024-56332 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2024-56332?
CVE-2024-56332 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check npm dependencies for CVE-2024-56332?
Run the dependency tree command: 'npm ls next'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7m27-7ghc-44w9",
  "modified" : "2025-01-03T21:48:13Z",
  "published" : "2025-01-03T20:19:29Z",
  "aliases" : [ "CVE-2024-56332" ],
  "summary" : "Next.js Allows a Denial of Service (DoS) with Server Actions",
  "details" : "### Impact\nA Denial of Service (DoS) attack allows attackers to construct requests that leaves requests to Server Actions hanging until the hosting provider cancels the function execution.\n\n_Note: Next.js server is idle during that time and only keeps the connection open. CPU and memory footprint are low during that time._\n\nDeployments without any protection against long running Server Action invocations are especially vulnerable. Hosting providers like Vercel or Netlify set a default maximum duration on function execution to reduce the risk of excessive billing.\n\nThis is the same issue as if the incoming HTTP request has an invalid `Content-Length` header or never closes. If the host has no other mitigations to those then this vulnerability is novel.\n\nThis vulnerability affects only Next.js deployments using Server Actions.\n\n### Patches\n\nThis vulnerability was resolved in Next.js 14.2.21, 15.1.2, and 13.5.8. We recommend that users upgrade to a safe version.\n\n### Workarounds\n\nThere are no official workarounds for this vulnerability.\n\n### Credits\n\nThanks to the PackDraw team for responsibly disclosing this vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
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      "name" : "next"
    },
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      }, {
        "fixed" : "13.5.8"
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    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "next"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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      }, {
        "fixed" : "14.2.21"
      } ]
    } ]
  }, {
    "package" : {
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      }, {
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      } ]
    } ]
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  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vercel/next.js/security/advisories/GHSA-7m27-7ghc-44w9"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-56332"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vercel/next.js"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-01-03T20:19:29Z",
    "nvd_published_at" : "2025-01-03T21:15:13Z"
  }
}