Vulnerabilities in pkg:npm/flatnest

PACKAGE
Advisory Identifier: GHSA-7px2-3c2p-q4v4
Share
Advisory Summary

CVE-2023-26135 is a HIGH (CVSS 7.3) flatnest prototype pollution vulnerability vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Flatnest libraries in the npm ecosystem. The issue involves flatnest prototype pollution vulnerability. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/flatnest

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/flatnest. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-7px2-3c2p-q4v4 CVE-2023-26135 HIGH flatnest Prototype Pollution vulnerability

CVE-2023-26135 at a Glance

CVE Identifier CVE-2023-26135
GHSA Identifier GHSA-7px2-3c2p-q4v4
Severity HIGH
CVSS v3.1 Base Score 7.3
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Flatnest
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.3

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:L/I:L/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 Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2023-26135

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

flatnest fixed: Latest secure release 
npm install flatnest@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 flatnest

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-26135, inspect your project dependencies using npm:

npm ls flatnest

Analyze the terminal output to locate any version of Flatnest 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 flatnest 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-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In Flatnest, 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

All versions of the package flatnest are vulnerable to Prototype Pollution via the `nest()` function in `flatnest/nest.js` file.

CVE-2023-26135 Affected Flatnest Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
flatnest
npm/flatnest
npm
≤ 1.0.0

References

NVD — CVE-2023-26135 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-26135
Flatnest Source Repository REPOSITORY
https://github.com/brycebaril/node-flatnest/issues/4
Security Fix Commit FIX COMMIT
https://github.com/brycebaril/node-flatnest/commit/27d569baf9d9d25677640edeaf2d13af165868d6
Flatnest Source Repository REPOSITORY
https://github.com/brycebaril/node-flatnest
Flatnest Source Repository REPOSITORY
https://github.com/brycebaril/node-flatnest/blob/b7d97ec64a04632378db87fcf3577bd51ac3ee39/nest.js#L43
Flatnest Source Repository REPOSITORY
https://github.com/brycebaril/node-flatnest/blob/b7d97ec64a04632378db87fcf3577bd51ac3ee39/nest.js%23L43
Flatnest Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-FLATNEST-3185149

Frequently Asked Questions

What is CVE-2023-26135?
CVE-2023-26135 is a security vulnerability in Flatnest involving flatnest Prototype Pollution vulnerability under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Flatnest versions are affected?
Affected versions include releases prior to current release patches across affected packages: flatnest.
What version fixes CVE-2023-26135?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is flatnest affected?
Yes, flatnest 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-2023-26135?
CVE-2023-26135 has a CVSS v3.1 base score of 7.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2023-26135?
CVE-2023-26135 is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for CVE-2023-26135?
Run the dependency tree command: 'npm ls flatnest'. 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-7px2-3c2p-q4v4",
  "modified" : "2023-06-30T20:38:36Z",
  "published" : "2023-06-30T06:30:14Z",
  "aliases" : [ "CVE-2023-26135" ],
  "summary" : "flatnest Prototype Pollution vulnerability",
  "details" : "All versions of the package flatnest are vulnerable to Prototype Pollution via the `nest()` function in `flatnest/nest.js` file.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "flatnest"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-26135"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/brycebaril/node-flatnest/issues/4"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/brycebaril/node-flatnest/commit/27d569baf9d9d25677640edeaf2d13af165868d6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/brycebaril/node-flatnest"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/brycebaril/node-flatnest/blob/b7d97ec64a04632378db87fcf3577bd51ac3ee39/nest.js#L43"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/brycebaril/node-flatnest/blob/b7d97ec64a04632378db87fcf3577bd51ac3ee39/nest.js%23L43"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-FLATNEST-3185149"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-06-30T20:38:36Z",
    "nvd_published_at" : "2023-06-30T05:15:09Z"
  }
}