Vulnerabilities in pkg:npm/org.webjars.npm:json-pointer

PACKAGE
Advisory Identifier: GHSA-282f-qqgm-c34q
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Advisory Summary

CVE-2021-23807 is a MODERATE (CVSS 5.6) prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Jsonpointer libraries in the npm ecosystem. The issue involves prototype pollution in node-jsonpointer. Remediation is available by upgrading affected packages to version 5.0.0.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/org.webjars.npm:json-pointer

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/org.webjars.npm:json-pointer. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-282f-qqgm-c34q CVE-2021-23807 MODERATE Prototype Pollution in node-jsonpointer

CVE-2021-23807 at a Glance

CVE Identifier CVE-2021-23807
GHSA Identifier GHSA-282f-qqgm-c34q
Severity MODERATE
CVSS v3.1 Base Score 5.6
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Jsonpointer
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.6

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
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-2021-23807

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

jsonpointer fixed: 5.0.0 
npm install jsonpointer@5.0.0
org.webjars.npm:json-pointer fixed: 5.0.0 
<dependency>
    <groupId>org.webjars.npm</groupId>
    <artifactId>json-pointer</artifactId>
    <version>5.0.0</version>
</dependency>
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 jsonpointer

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-23807, inspect your project dependencies using npm:

npm ls jsonpointer

Analyze the terminal output to locate any version of Jsonpointer in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.0), your application is affected.

Note: The npm ls jsonpointer 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 Jsonpointer, 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

This affects the package `jsonpointer` before `5.0.0`. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.

CVE-2021-23807 Affected Jsonpointer Versions

2 component(s)
Fixed Versions:
5.0.0
Product / Package Ecosystem Affected Versions Fixed Version
jsonpointer
npm/jsonpointer
npm
< 5.0.0
5.0.0
org.webjars.npm:json-pointer
npm/org.webjars.npm:json-pointer
npm
< 5.0.0
5.0.0

References

NVD — CVE-2021-23807 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23807
Jsonpointer Source Repository REPOSITORY
https://github.com/janl/node-jsonpointer/pull/51
Security Fix Commit FIX COMMIT
https://github.com/janl/node-jsonpointer/commit/a0345f3550cd9c4d89f33b126390202b89510ad4
Jsonpointer Source Repository REPOSITORY
https://github.com/janl/node-jsonpointer
snyk.io/vuln/snyk-java-orgw... WEB
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1910273
snyk.io/vuln/snyk-js-jsonpo... WEB
https://snyk.io/vuln/SNYK-JS-JSONPOINTER-1577288

Frequently Asked Questions

What is CVE-2021-23807?
CVE-2021-23807 is a security vulnerability in Jsonpointer involving Prototype Pollution in node-jsonpointer under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Jsonpointer versions are affected?
Affected versions include releases prior to 5.0.0 across affected packages: jsonpointer, org.webjars.npm:json-pointer.
What version fixes CVE-2021-23807?
Upgrading to 5.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jsonpointer affected?
Yes, jsonpointer is affected in releases prior to 5.0.0. Upgrade your dependency to 5.0.0 or later.
Is json-pointer affected?
Yes, org.webjars.npm:json-pointer is affected in releases prior to 5.0.0. Upgrade your dependency to 5.0.0 or later.
What is the CVSS score of CVE-2021-23807?
CVE-2021-23807 has a CVSS v3.1 base score of 5.6 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2021-23807?
CVE-2021-23807 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-2021-23807?
Run the dependency tree command: 'npm ls jsonpointer'. 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-282f-qqgm-c34q",
  "modified" : "2025-03-05T19:06:09Z",
  "published" : "2021-11-08T17:44:45Z",
  "aliases" : [ "CVE-2021-23807" ],
  "summary" : "Prototype Pollution in node-jsonpointer",
  "details" : "This affects the package `jsonpointer` before `5.0.0`. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "jsonpointer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.0.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "org.webjars.npm:json-pointer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-23807"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/janl/node-jsonpointer/pull/51"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/janl/node-jsonpointer/commit/a0345f3550cd9c4d89f33b126390202b89510ad4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/janl/node-jsonpointer"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1910273"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-JSONPOINTER-1577288"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321", "CWE-843" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-11-04T16:58:08Z",
    "nvd_published_at" : "2021-11-03T18:15:00Z"
  }
}