CVE-2024-45801: Dompurify DOMPurify Allows Tampering By Prototype Vulnerability

HIGH
Advisory Identifier: GHSA-mmhx-hmjr-r674
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CVSS 7.0
CWE-1321 CWE-1333
Published
Advisory Summary

CVE-2024-45801 is a HIGH (CVSS 7.0) dompurify allows tampering by prototype vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Dompurify libraries in the npm ecosystem. The issue involves dompurify allows tampering by prototype pollution. Remediation is available by upgrading affected packages to version 2.5.4, 3.1.3.

CVE-2024-45801 at a Glance

CVE Identifier CVE-2024-45801
GHSA Identifier GHSA-mmhx-hmjr-r674
Severity HIGH
CVSS v3.1 Base Score 7.0
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Dompurify
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.0

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:H/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 High (I:H)
Availability Low (A:L)

How to Fix CVE-2024-45801

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: 2.5.4 
npm install dompurify@2.5.4
dompurify fixed: 3.1.3 
npm install dompurify@3.1.3
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 CVE-2024-45801, 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 2.5.4), 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-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 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

It has been discovered that malicious HTML using special nesting techniques can bypass the depth checking added to DOMPurify in recent releases. It was also possible to use Prototype Pollution to weaken the depth check. This renders dompurify unable to avoid XSS attack. Fixed by https://github.com/cure53/DOMPurify/commit/1e520262bf4c66b5efda49e2316d6d1246ca7b21 (3.x branch) and https://github.com/cure53/DOMPurify/commit/26e1d69ca7f769f5c558619d644d90dd8bf26ebc (2.x branch).

CVE-2024-45801 Affected Dompurify Versions

2 component(s)
Fixed Versions:
2.5.43.1.3
Product / Package Ecosystem Affected Versions Fixed Version
dompurify
npm/dompurify
npm
< 2.5.4
2.5.4
dompurify
npm/dompurify
npm
≥ 3.0.0
< 3.1.3
3.1.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674
NVD — CVE-2024-45801 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-45801
Security Fix Commit FIX COMMIT
https://github.com/cure53/DOMPurify/commit/1e520262bf4c66b5efda49e2316d6d1246ca7b21
Security Fix Commit FIX COMMIT
https://github.com/cure53/DOMPurify/commit/26e1d69ca7f769f5c558619d644d90dd8bf26ebc
Dompurify Source Repository REPOSITORY
https://github.com/cure53/DOMPurify

Frequently Asked Questions

What is CVE-2024-45801?
CVE-2024-45801 is a security vulnerability in Dompurify involving DOMPurify allows tampering by prototype pollution under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Dompurify versions are affected?
Affected versions include releases prior to 2.5.4, 3.1.3 across affected packages: dompurify.
What version fixes CVE-2024-45801?
Upgrading to 2.5.4, 3.1.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is dompurify affected?
Yes, dompurify is affected in releases prior to 2.5.4, 3.1.3. Upgrade your dependency to 2.5.4, 3.1.3 or later.
What is the CVSS score of CVE-2024-45801?
CVE-2024-45801 has a CVSS v3.1 base score of 7.0 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L.
What CWE is associated with CVE-2024-45801?
CVE-2024-45801 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-2024-45801?
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-mmhx-hmjr-r674",
  "modified" : "2024-09-16T22:37:33Z",
  "published" : "2024-09-16T20:34:26Z",
  "aliases" : [ "CVE-2024-45801" ],
  "summary" : "DOMPurify allows tampering by prototype pollution",
  "details" : "It has been discovered that malicious HTML using special nesting techniques can bypass the depth checking added to DOMPurify in recent releases. It was also possible to use Prototype Pollution to weaken the depth check.\n\nThis renders dompurify unable to avoid XSS attack.\n\nFixed by https://github.com/cure53/DOMPurify/commit/1e520262bf4c66b5efda49e2316d6d1246ca7b21 (3.x branch) and https://github.com/cure53/DOMPurify/commit/26e1d69ca7f769f5c558619d644d90dd8bf26ebc (2.x branch).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "dompurify"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.5.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "dompurify"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.1.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-45801"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cure53/DOMPurify/commit/1e520262bf4c66b5efda49e2316d6d1246ca7b21"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/cure53/DOMPurify/commit/26e1d69ca7f769f5c558619d644d90dd8bf26ebc"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cure53/DOMPurify"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321", "CWE-1333" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-09-16T20:34:26Z",
    "nvd_published_at" : "2024-09-16T19:16:11Z"
  }
}