Vulnerabilities in pkg:npm/ckeditor4

PACKAGE
Advisory Identifier: GHSA-7r32-vfj5-c2jv
Advisory Summary

CVE-2024-43407 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Ckeditor4 libraries in the npm ecosystem. The issue involves code snippet geshi plugin in ckeditor 4 has reflected cross-site scripting (xss) vulnerability. Remediation is available by upgrading affected packages to version 4.25.0.

16 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/ckeditor4

16 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/ckeditor4. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-7r32-vfj5-c2jv CVE-2024-43407 MODERATE Code Snippet GeSHi plugin in CKEditor 4 has reflected cross-site scripting (XSS) vulnerability
GHSA-6v96-m24v-f58j CVE-2024-43411 MODERATE CKEditor4 low-risk cross-site scripting (XSS) vulnerability linked to potential domain takeover
GHSA-fq6h-4g8v-qqvm CVE-2024-24815 MODERATE CKEditor4 Cross-site Scripting vulnerability caused by incorrect CDATA detection
GHSA-mw2c-vx6j-mg76 CVE-2024-24816 MODERATE CKEditor4 Cross-site Scripting vulnerability in samples with enabled the preview feature
GHSA-rgx6-rjj4-c388 CVE-2021-33829 MODERATE ckeditor4 vulnerable to cross-site scripting
GHSA-wh5w-82f3-wrxh CVE-2023-4771 MODERATE CKEditor cross-site scripting vulnerability in AJAX sample
GHSA-hxjc-9j8v-v9pr - MODERATE Duplicate Advisory: CKEditor Cross-site Scripting vulnerability
GHSA-vcjf-mgcg-jxjq CVE-2020-9281 MODERATE CKEditor 4.0 vulnerability in the HTML Data Processor
GHSA-4m44-5j2g-xf64 CVE-2020-27193 MODERATE Improper Neutralization of Input During Web Page Generation in CKEditor4
GHSA-4fc4-4p5g-6w89 CVE-2022-24728 MODERATE Cross-site Scripting in CKEditor4
GHSA-wpvm-wqr4-p7cw CVE-2021-26272 MODERATE Inclusion of Functionality from Untrusted Control Sphere in CKEditor 4
GHSA-6226-h7ff-ch6c CVE-2021-32808 HIGH Widget feature vulnerability allowing to execute JavaScript code using undo functionality
GHSA-7889-rm5j-hpgg CVE-2021-32809 MODERATE Clipboard feature vulnerability allowing to inject arbitrary HTML into the editor using paste functionality
GHSA-m94c-37g6-cjhc CVE-2021-37695 HIGH Fake objects feature vulnerability allowing to execute JavaScript code using malformed HTML.
GHSA-pvmx-g8h5-cprj CVE-2021-41164 HIGH Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML
GHSA-7h26-63m7-qhf2 CVE-2021-41165 HIGH HTML comments vulnerability allowing to execute JavaScript code

CVE-2024-43407 at a Glance

CVE Identifier CVE-2024-43407
GHSA Identifier GHSA-7r32-vfj5-c2jv
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Ckeditor4
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2024-43407

To remediate this vulnerability, upgrade all affected Ckeditor4 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

ckeditor4 fixed: 4.25.0
npm install ckeditor4@4.25.0
ckeditor/ckeditor fixed: 4.25.0
Upgrade ckeditor/ckeditor to 4.25.0
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 ckeditor4

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2024-43407, inspect your project dependencies using npm:

npm ls ckeditor4

Analyze the terminal output to locate any version of Ckeditor4 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.25.0), your application is affected.

Note: The npm ls ckeditor4 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 Ckeditor4, 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

### Affected packages The vulnerability has been discovered in [Code Snippet GeSHi](https://ckeditor.com/cke4/addon/codesnippetgeshi) plugin. All integrators that use [GeSHi syntax highlighter](https://github.com/GeSHi/geshi-1.0) on the backend side can be affected. ### Impact A potential vulnerability has been discovered in CKEditor 4 [Code Snippet GeSHi](https://ckeditor.com/cke4/addon/codesnippetgeshi) plugin. The vulnerability allowed a reflected XSS attack by exploiting a flaw in the [GeSHi syntax highlighter library](https://github.com/GeSHi/geshi-1.0) hosted by the victim. The GeSHi library was included as a vendor dependency in CKEditor 4 source files. In a specific scenario, an attacker could craft a malicious script that could be executed by sending a request to the GeSHi library hosted on a PHP web server. ### Patches The [GeSHi library](https://github.com/GeSHi/geshi-1.0) is no longer actively maintained. Due to the lack of ongoing support and updates, potential security vulnerabilities have been identified with its continued use. To mitigate these risks and enhance the overall security of the CKEditor 4, we have decided to completely remove the GeSHi library as a dependency. This change aims to maintain a secure environment and reduce the risk of any security incidents related to outdated or unsupported software. To integrators who still want to use the GeSHi syntax highlighter, we recommend manually adding the [GeSHi library](https://github.com/GeSHi/geshi-1.0) . Please be aware of and understand the potential security vulnerabilities associated with its use. The fix is be available in version 4.25.0-lts. ### Acknowledgements The CKEditor 4 team would like to thank [Jiasheng He](https://github.com/Hebing123) from Qihoo 360 for recognizing and reporting this vulnerability. ### For more information Email us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.

CVE-2024-43407 Affected Ckeditor4 Versions

2 component(s)
Fixed Versions:
4.25.0
Product / Package Ecosystem Affected Versions Fixed Version
ckeditor4
npm
< 4.25.0
4.25.0
ckeditor/ckeditor
Packagist
< 4.25.0
4.25.0

References

Frequently Asked Questions

What is CVE-2024-43407?
CVE-2024-43407 is a security vulnerability in Ckeditor4 involving Code Snippet GeSHi plugin in CKEditor 4 has reflected cross-site scripting (XSS) vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Ckeditor4 versions are affected?
Affected versions include releases prior to 4.25.0 across affected packages: ckeditor4, ckeditor/ckeditor.
What version fixes CVE-2024-43407?
Upgrading to 4.25.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ckeditor4 affected?
Yes, ckeditor4 is affected in releases prior to 4.25.0. Upgrade your dependency to 4.25.0 or later.
Is ckeditor/ckeditor affected?
Yes, ckeditor/ckeditor is affected in releases prior to 4.25.0. Upgrade your dependency to 4.25.0 or later.
What is the CVSS score of CVE-2024-43407?
CVE-2024-43407 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2024-43407?
CVE-2024-43407 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-2024-43407?
Run the dependency tree command: 'npm ls ckeditor4'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7r32-vfj5-c2jv",
  "modified" : "2025-02-18T19:03:30Z",
  "published" : "2024-08-21T18:29:15Z",
  "aliases" : [ "CVE-2024-43407" ],
  "summary" : "Code Snippet GeSHi plugin in CKEditor 4 has reflected cross-site scripting (XSS) vulnerability",
  "details" : "### Affected packages\nThe vulnerability has been discovered in [Code Snippet GeSHi](https://ckeditor.com/cke4/addon/codesnippetgeshi) plugin. All integrators that use [GeSHi syntax highlighter](https://github.com/GeSHi/geshi-1.0) on the backend side can be affected.\n\n### Impact\nA potential vulnerability has been discovered in CKEditor 4 [Code Snippet GeSHi](https://ckeditor.com/cke4/addon/codesnippetgeshi) plugin. The vulnerability allowed a reflected XSS attack by exploiting a flaw in the [GeSHi syntax highlighter library](https://github.com/GeSHi/geshi-1.0) hosted by the victim.\n\nThe GeSHi library was included as a vendor dependency in CKEditor 4 source files. In a specific scenario, an attacker could craft a malicious script that could be executed by sending a request to the GeSHi library hosted on a PHP web server.\n\n### Patches\n\nThe [GeSHi library](https://github.com/GeSHi/geshi-1.0) is no longer actively maintained. Due to the lack of ongoing support and updates, potential security vulnerabilities have been identified with its continued use. To mitigate these risks and enhance the overall security of the CKEditor 4, we have decided to completely remove the GeSHi library as a dependency. This change aims to maintain a secure environment and reduce the risk of any security incidents related to outdated or unsupported software.\n\nTo integrators who still want to use the GeSHi syntax highlighter, we recommend manually adding the [GeSHi library](https://github.com/GeSHi/geshi-1.0) . Please be aware of and understand the potential security vulnerabilities associated with its use.\n\nThe fix is be available in version 4.25.0-lts.\n\n### Acknowledgements\n\nThe CKEditor 4 team would like to thank [Jiasheng He](https://github.com/Hebing123) from Qihoo 360 for recognizing and reporting this vulnerability.\n\n### For more information\n\nEmail us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ckeditor4"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.25.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ckeditor/ckeditor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.25.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7r32-vfj5-c2jv"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-43407"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ckeditor/ckeditor4/commit/71072c9f7f263329841bd38e7e5309074c82ef94"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ckeditor/ckeditor4/commit/951e7d75fcbcaa2590b0719fb0bb0dd0539ca6fa"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ckeditor/ckeditor4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-08-21T18:29:15Z",
    "nvd_published_at" : "2024-08-21T15:15:09Z"
  }
}