CKEditor4 Cross-site Scripting vulnerability in samples with enabled the preview feature (CVE-2024-24816) | HOL Guard CVE

Medium · CVSS 6.1CVE-2024-24816GHSA-MW2C-VX6J-MG76

CKEditor4 Cross-site Scripting vulnerability in samples with enabled the preview feature

Answer in brief

CVE-2024-24816 records a Medium severity (CVSS 6.1) vulnerability in CKEditor4 Cross-site Scripting vulnerability in samples with enabled the preview feature. The current sources do not mark it as known exploited. The current feed maps ckeditor4 (npm). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Feb 7, 2024Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ckeditor4 (npm). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ckeditor4npm	>=0 <4.24.0-lts	4.24.0-lts

Recommended response

Check inventory. Check lockfiles and deployed manifests for ckeditor4.
Review the reported fix. Update ckeditor4 to 4.24.0-lts if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Feb 7, 2024
Evidence: source:osv:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

### Affected packages The vulnerability has been discovered in the samples that use the [preview](https://ckeditor.com/cke4/addon/preview) feature: * `samples/old/**/*.html` * `plugins/[plugin name]/samples/**/*.html` All integrators that use these samples in the production code can be affected. ### Impact A potential vulnerability has been discovered in one of CKEditor's 4 samples that are shipped with production code. The vulnerability allowed to execute JavaScript code by abusing the misconfigured [preview feature](https://ckeditor.com/cke4/addon/preview). It affects all users using the CKEditor 4 at version < 4.24.0-lts with affected samples used in a production environment. ### Patches The problem has been recognized and patched. The fix will be available in version 4.24.0-lts. ### For more information Email us at [[email protected]](mailto:[email protected]) if you have any questions or comments about this advisory. ### Acknowledgements The CKEditor 4 team would like to thank [Marcin Wyczechowski](https://www.linkedin.com/in/marcin-wyczechowski-0a823795/) & [Michał Majchrowicz](https://www.linkedin.com/in/micha%C5%82-majchrowicz-mwsc/) [AFINE Team](https://afine.com/) for recognizing and reporting this vulnerability.

Quoted source text, attributed separately from HOL analysis.