CVE-2024-51479: Next Next.js Authorization Bypass Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-7gfc-8cq8-jh5f
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CVSS 7.5
CWE-285 CWE-863
Published
Advisory Summary

CVE-2024-51479 is a HIGH (CVSS 7.5) next.js authorization bypass vulnerability vulnerability (CWE-285: Improper Authorization) affecting Next libraries in the npm ecosystem. The issue involves next.js authorization bypass vulnerability. Remediation is available by upgrading affected packages to version 14.2.15.

CVE-2024-51479 at a Glance

CVE Identifier CVE-2024-51479
GHSA Identifier GHSA-7gfc-8cq8-jh5f
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-285: Improper Authorization
Affected Product Next
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:H/I:N/A:N).

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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-51479

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: 14.2.15 
npm install next@14.2.15
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-2024-51479, 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 14.2.15), 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-285: Improper Authorization, where the product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. 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 If a Next.js application is performing authorization in middleware based on pathname, it was possible for this authorization to be bypassed. ### Patches This issue was patched in Next.js `14.2.15` and later. If your Next.js application is hosted on Vercel, this vulnerability has been automatically mitigated, regardless of Next.js version. ### Workarounds There are no official workarounds for this vulnerability. #### Credits We'd like to thank [tyage](http://github.com/tyage) (GMO CyberSecurity by IERAE) for responsible disclosure of this issue.

CVE-2024-51479 Affected Next Versions

1 component(s)
Fixed Versions:
14.2.15
Product / Package Ecosystem Affected Versions Fixed Version
next
npm/next
npm
≥ 9.5.5
< 14.2.15
14.2.15

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vercel/next.js/security/advisories/GHSA-7gfc-8cq8-jh5f
NVD — CVE-2024-51479 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-51479
Security Fix Commit FIX COMMIT
https://github.com/vercel/next.js/commit/1c8234eb20bc8afd396b89999a00f06b61d72d7b
Next Source Repository REPOSITORY
https://github.com/vercel/next.js
Next Release RELEASE
https://github.com/vercel/next.js/releases/tag/v14.2.15

Frequently Asked Questions

What is CVE-2024-51479?
CVE-2024-51479 is a security vulnerability in Next involving Next.js authorization bypass vulnerability under CWE-285: Improper Authorization.
Which Next versions are affected?
Affected versions include releases prior to 14.2.15 across affected packages: next.
What version fixes CVE-2024-51479?
Upgrading to 14.2.15 (or the latest patched release for your respective branch) resolves the vulnerability.
Is next affected?
Yes, next is affected in releases prior to 14.2.15. Upgrade your dependency to 14.2.15 or later.
What is the CVSS score of CVE-2024-51479?
CVE-2024-51479 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-51479?
CVE-2024-51479 is classified under CWE-285: Improper Authorization (The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.).
How can I check npm dependencies for CVE-2024-51479?
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-7gfc-8cq8-jh5f",
  "modified" : "2025-09-10T21:12:24Z",
  "published" : "2024-12-17T15:09:06Z",
  "aliases" : [ "CVE-2024-51479" ],
  "summary" : "Next.js authorization bypass vulnerability",
  "details" : "### Impact\nIf a Next.js application is performing authorization in middleware based on pathname, it was possible for this authorization to be bypassed.\n\n### Patches\nThis issue was patched in Next.js `14.2.15` and later.\n\nIf your Next.js application is hosted on Vercel, this vulnerability has been automatically mitigated, regardless of Next.js version.\n\n### Workarounds\nThere are no official workarounds for this vulnerability.\n\n#### Credits\nWe'd like to thank [tyage](http://github.com/tyage) (GMO CyberSecurity by IERAE) for responsible disclosure of this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "next"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.5.5"
      }, {
        "fixed" : "14.2.15"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vercel/next.js/security/advisories/GHSA-7gfc-8cq8-jh5f"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-51479"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vercel/next.js/commit/1c8234eb20bc8afd396b89999a00f06b61d72d7b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vercel/next.js"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vercel/next.js/releases/tag/v14.2.15"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-12-17T15:09:06Z",
    "nvd_published_at" : "2024-12-17T19:15:06Z"
  }
}