CVE-2025-65966: @oneuptime/common OneUptime Unauthorized User Creation Vulnerability

HIGH
Advisory Identifier: GHSA-m449-vh5f-574g
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CWE-285
Published
Advisory Summary

CVE-2025-65966 is a HIGH oneuptime unauthorized user creation vulnerability (CWE-285: Improper Authorization) affecting @oneuptime/common libraries in the npm ecosystem. The issue involves oneuptime unauthorized user creation via api. Remediation is available by upgrading affected packages to version 9.1.0.

CVE-2025-65966 at a Glance

CVE Identifier CVE-2025-65966
GHSA Identifier GHSA-m449-vh5f-574g
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-285: Improper Authorization
Affected Product @oneuptime/common
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2025-65966

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

@oneuptime/common fixed: 9.1.0 
npm install @oneuptime/common@9.1.0
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 @oneuptime/common

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-65966, inspect your project dependencies using npm:

npm ls @oneuptime/common

Analyze the terminal output to locate any version of @oneuptime/common in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.1.0), your application is affected.

Note: The npm ls @oneuptime/common 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 @oneuptime/common, 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

### Summary A low-permission user can create new accounts through a direct API request instead of being restricted to the intended interface. ### PoC A low-permission user sends a crafted API request to the user-creation endpoint and the system creates the account successfully. ![WhatsApp Image 2025-11-23 at 14 27 32_0e0f5889](https://github.com/user-attachments/assets/5a539310-c9a2-4466-8926-b49b9b2a2422) ### Impact This allows attackers to create unauthorized accounts.

CVE-2025-65966 Affected @oneuptime/common Versions

1 component(s)
Fixed Versions:
9.1.0
Product / Package Ecosystem Affected Versions Fixed Version
@oneuptime/common
npm/@oneuptime/common
npm
< 9.1.0
9.1.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/OneUptime/oneuptime/security/advisories/GHSA-m449-vh5f-574g
NVD — CVE-2025-65966 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-65966
Security Fix Commit FIX COMMIT
https://github.com/OneUptime/oneuptime/commit/07bc6d4edde7397ea6b88f889c065ec392052ab4
@oneuptime/common Source Repository REPOSITORY
https://github.com/OneUptime/oneuptime

Frequently Asked Questions

What is CVE-2025-65966?
CVE-2025-65966 is a security vulnerability in @oneuptime/common involving OneUptime Unauthorized User Creation via API under CWE-285: Improper Authorization.
Which @oneuptime/common versions are affected?
Affected versions include releases prior to 9.1.0 across affected packages: @oneuptime/common.
What version fixes CVE-2025-65966?
Upgrading to 9.1.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @oneuptime/common affected?
Yes, @oneuptime/common is affected in releases prior to 9.1.0. Upgrade your dependency to 9.1.0 or later.
What CWE is associated with CVE-2025-65966?
CVE-2025-65966 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-2025-65966?
Run the dependency tree command: 'npm ls @oneuptime/common'. 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-m449-vh5f-574g",
  "modified" : "2025-12-01T16:02:30Z",
  "published" : "2025-11-26T19:33:08Z",
  "aliases" : [ "CVE-2025-65966" ],
  "summary" : "OneUptime Unauthorized User Creation via API",
  "details" : "### Summary\nA low-permission user can create new accounts through a direct API request instead of being restricted to the intended interface.\n\n### PoC\nA low-permission user sends a crafted API request to the user-creation endpoint and the system creates the account successfully.\n![WhatsApp Image 2025-11-23 at 14 27 32_0e0f5889](https://github.com/user-attachments/assets/5a539310-c9a2-4466-8926-b49b9b2a2422)\n\n### Impact\nThis allows attackers to create unauthorized accounts.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@oneuptime/common"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "9.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-m449-vh5f-574g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-65966"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OneUptime/oneuptime/commit/07bc6d4edde7397ea6b88f889c065ec392052ab4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OneUptime/oneuptime"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-11-26T19:33:08Z",
    "nvd_published_at" : "2025-11-26T19:15:50Z"
  }
}