CVE-2021-23327: Apexcharts Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-w46j-8hm6-h8mm
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CVSS 6.3
CWE-79
Published
Advisory Summary

CVE-2021-23327 is a MODERATE (CVSS 6.3) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Apexcharts libraries in the npm ecosystem. The issue involves xss in apexcharts. Remediation is available by upgrading affected packages to version 3.24.0.

CVE-2021-23327 at a Glance

CVE Identifier CVE-2021-23327
GHSA Identifier GHSA-w46j-8hm6-h8mm
Severity MODERATE
CVSS v3.1 Base Score 6.3
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Apexcharts
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.3

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:R/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 Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2021-23327

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

apexcharts fixed: 3.24.0 
npm install apexcharts@3.24.0
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 apexcharts

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-23327, inspect your project dependencies using npm:

npm ls apexcharts

Analyze the terminal output to locate any version of Apexcharts in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.24.0), your application is affected.

Note: The npm ls apexcharts 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Apexcharts, 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

The package apexcharts before 3.24.0 are vulnerable to Cross-site Scripting (XSS) via lack of sanitization of graph legend fields.

CVE-2021-23327 Affected Apexcharts Versions

1 component(s)
Fixed Versions:
3.24.0
Product / Package Ecosystem Affected Versions Fixed Version
apexcharts
npm/apexcharts
npm
< 3.24.0
3.24.0

References

NVD — CVE-2021-23327 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23327
Apexcharts Source Repository REPOSITORY
https://github.com/apexcharts/apexcharts.js/pull/2158
Security Fix Commit FIX COMMIT
https://github.com/apexcharts/apexcharts.js/commit/68f3f34d125719b4767614fe0a595cc65bde1d19
snyk.io/vuln/snyk-java-orgw... WEB
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1070616
snyk.io/vuln/snyk-js-apexch... WEB
https://snyk.io/vuln/SNYK-JS-APEXCHARTS-1062708
www.npmjs.com/package/apexcharts WEB
https://www.npmjs.com/package/apexcharts

Frequently Asked Questions

What is CVE-2021-23327?
CVE-2021-23327 is a security vulnerability in Apexcharts involving XSS in apexcharts under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Apexcharts versions are affected?
Affected versions include releases prior to 3.24.0 across affected packages: apexcharts.
What version fixes CVE-2021-23327?
Upgrading to 3.24.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is apexcharts affected?
Yes, apexcharts is affected in releases prior to 3.24.0. Upgrade your dependency to 3.24.0 or later.
What is the CVSS score of CVE-2021-23327?
CVE-2021-23327 has a CVSS v3.1 base score of 6.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2021-23327?
CVE-2021-23327 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check npm dependencies for CVE-2021-23327?
Run the dependency tree command: 'npm ls apexcharts'. 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-w46j-8hm6-h8mm",
  "modified" : "2023-09-12T20:53:29Z",
  "published" : "2021-02-11T20:47:34Z",
  "aliases" : [ "CVE-2021-23327" ],
  "summary" : "XSS in apexcharts",
  "details" : "The package apexcharts before 3.24.0 are vulnerable to Cross-site Scripting (XSS) via lack of sanitization of graph legend fields.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "apexcharts"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.24.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-23327"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apexcharts/apexcharts.js/pull/2158"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apexcharts/apexcharts.js/commit/68f3f34d125719b4767614fe0a595cc65bde1d19"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1070616"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-APEXCHARTS-1062708"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/apexcharts"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-02-10T18:18:38Z",
    "nvd_published_at" : "2021-02-09T08:15:00Z"
  }
}