CVE-2025-63700: @clerk/clerk js Clerk-js Vulnerable To Bypass Of Vulnerability

MODERATE
Advisory Identifier: GHSA-3mm3-wfpv-q85g
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CVSS 7.5
CWE-639 CWE-290
Published
Advisory Summary

CVE-2025-63700 is a MODERATE (CVSS 7.5) clerk-js vulnerable to bypass of vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting @clerk/clerk js libraries in the npm ecosystem. The issue involves clerk-js vulnerable to bypass of oauth authentication flow by manipulating request at otp verification stage. Remediation is available in the latest vendor maintenance releases.

CVE-2025-63700 at a Glance

CVE Identifier CVE-2025-63700
GHSA Identifier GHSA-3mm3-wfpv-q85g
Severity MODERATE
CVSS v3.1 Base Score 7.5
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product @clerk/clerk js
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-2025-63700

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

@clerk/clerk-js fixed: Latest secure release 
npm install @clerk/clerk-js@Latest secure release
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 @clerk/clerk-js

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-63700, inspect your project dependencies using npm:

npm ls @clerk/clerk-js

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

Note: The npm ls @clerk/clerk-js 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-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In @clerk/clerk js, 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

An issue was discovered in Clerk-js 5.88.0 allowing attackers to bypass the OAuth authentication flow by manipulating the request at the OTP verification stage.

CVE-2025-63700 Affected @clerk/clerk js Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
@clerk/clerk-js
npm/@clerk/clerk-js
npm
≤ 5.88.0

References

NVD — CVE-2025-63700 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-63700
clerk.com WEB
https://clerk.com
@clerk/clerk js Source Repository REPOSITORY
https://github.com/clerk/javascript
@clerk/clerk js Source Repository REPOSITORY
https://github.com/itsnishat08/CVE-2025-63700

Frequently Asked Questions

What is CVE-2025-63700?
CVE-2025-63700 is a security vulnerability in @clerk/clerk js involving Clerk-js vulnerable to bypass of OAuth authentication flow by manipulating request at OTP verification stage under CWE-639: Authorization Bypass Through User-Controlled Key.
Which @clerk/clerk js versions are affected?
Affected versions include releases prior to current release patches across affected packages: @clerk/clerk-js.
What version fixes CVE-2025-63700?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is @clerk/clerk-js affected?
Yes, @clerk/clerk-js is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2025-63700?
CVE-2025-63700 has a CVSS v3.1 base score of 7.5 (MODERATE) 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-2025-63700?
CVE-2025-63700 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check npm dependencies for CVE-2025-63700?
Run the dependency tree command: 'npm ls @clerk/clerk-js'. 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-3mm3-wfpv-q85g",
  "modified" : "2025-11-21T00:38:59Z",
  "published" : "2025-11-20T21:30:32Z",
  "aliases" : [ "CVE-2025-63700" ],
  "summary" : "Clerk-js vulnerable to bypass of OAuth authentication flow by manipulating request at OTP verification stage",
  "details" : "An issue was discovered in Clerk-js 5.88.0 allowing attackers to bypass the OAuth authentication flow by manipulating the request at the OTP verification stage.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@clerk/clerk-js"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "5.88.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-63700"
  }, {
    "type" : "WEB",
    "url" : "https://clerk.com"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/clerk/javascript"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/itsnishat08/CVE-2025-63700"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-290", "CWE-639" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-11-21T00:38:59Z",
    "nvd_published_at" : "2025-11-20T19:16:21Z"
  }
}