GHSA-mjjq-c88q-qhr6: Dompurify Cross-Site Scripting Vulnerability

CRITICAL
Share
CWE-79
Published
Advisory Summary

GHSA-mjjq-c88q-qhr6 is a CRITICAL cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Dompurify libraries in the npm ecosystem. The issue involves cross-site scripting in dompurify. Remediation is available by upgrading affected packages to version 2.0.7.

GHSA-mjjq-c88q-qhr6 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-mjjq-c88q-qhr6
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Dompurify
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-mjjq-c88q-qhr6

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

dompurify fixed: 2.0.7 
npm install dompurify@2.0.7
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 dompurify

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-mjjq-c88q-qhr6, inspect your project dependencies using npm:

npm ls dompurify

Analyze the terminal output to locate any version of Dompurify in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.7), your application is affected.

Note: The npm ls dompurify 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 Dompurify, 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

Versions of `dompurify` prior to 2.0.7 are vulnerable to Cross-Site Scripting (XSS). It is possible to bypass the package sanitization through Mutation XSS, which may allow an attacker to execute arbitrary JavaScript in a victim's browser. ## Recommendation Upgrade to version 2.0.7 or later.

GHSA-mjjq-c88q-qhr6 Affected Dompurify Versions

1 component(s)
Fixed Versions:
2.0.7
Product / Package Ecosystem Affected Versions Fixed Version
dompurify
npm/dompurify
npm
< 2.0.7
2.0.7

References

Dompurify Source Repository REPOSITORY
https://github.com/cure53/DOMPurify
Dompurify Release RELEASE
https://github.com/cure53/DOMPurify/releases/tag/2.0.7
www.npmjs.com/advisories/1223 WEB
https://www.npmjs.com/advisories/1223

Frequently Asked Questions

What is GHSA-mjjq-c88q-qhr6?
GHSA-mjjq-c88q-qhr6 is a security vulnerability in Dompurify involving Cross-Site Scripting in dompurify under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Dompurify versions are affected?
Affected versions include releases prior to 2.0.7 across affected packages: dompurify.
What version fixes GHSA-mjjq-c88q-qhr6?
Upgrading to 2.0.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is dompurify affected?
Yes, dompurify is affected in releases prior to 2.0.7. Upgrade your dependency to 2.0.7 or later.
What CWE is associated with GHSA-mjjq-c88q-qhr6?
GHSA-mjjq-c88q-qhr6 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 GHSA-mjjq-c88q-qhr6?
Run the dependency tree command: 'npm ls dompurify'. 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-mjjq-c88q-qhr6",
  "modified" : "2021-09-29T20:13:06Z",
  "published" : "2020-09-03T21:22:00Z",
  "aliases" : [ ],
  "summary" : "Cross-Site Scripting in dompurify",
  "details" : "Versions of `dompurify` prior to 2.0.7 are vulnerable to Cross-Site Scripting (XSS). It is possible to bypass the package sanitization through Mutation XSS, which may allow an attacker to execute arbitrary JavaScript in a victim's browser.\n\n\n## Recommendation\n\nUpgrade to version 2.0.7 or later.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "dompurify"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "PACKAGE",
    "url" : "https://github.com/cure53/DOMPurify"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cure53/DOMPurify/releases/tag/2.0.7"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1223"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:51:30Z",
    "nvd_published_at" : null
  }
}