CKEditor4 Cross-site Scripting vulnerability caused by incorrect CDATA detection
Affected packages
The vulnerability has been discovered in the core HTML parsing module and may affect all editor instances that:
- Enabled full-page editing mode,
- or enabled CDATA elements in Advanced Content Filtering configuration (defaults to
scriptandstyleelements).
Impact
A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code. An attacker could abuse faulty CDATA content detection and use it to prepare an intentional attack on the editor. It affects all users using the CKEditor 4 at version < 4.24.0-lts.
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 security@cksource.com if you have any questions or comments about this advisory.
Acknowledgements
The CKEditor 4 team would like to thank Michal Frýba from ALEF NULA for recognizing and reporting this vulnerability.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | ckeditor/ckeditor | < 4.24.0 | 4.24.0 |
| Paquete de npm | ckeditor4 | < 4.24.0-lts | 4.24.0-lts |
Referencias
- https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-fq6h-4g8v-qqvm
- https://nvd.nist.gov/vuln/detail/CVE-2024-24815
- https://github.com/ckeditor/ckeditor4/commit/8ed1a3c93d0ae5f49f4ecff5738ab8a2972194cb
- https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dtd.html#property-S-cdata
- https://ckeditor.com/docs/ckeditor4/latest/features/fullpage.html
- https://ckeditor.com/docs/ckeditor4/latest/guide/dev_advanced_content_filter.html
- https://github.com/ckeditor/ckeditor4
- https://www.drupal.org/sa-contrib-2024-009
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Debilidad (CWE)
CWE-79- Plataforma
- Composer, npm
- Paquete
ckeditor/ckeditor, ckeditor4- Publicada
- 07.02.2024
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-fq6h-4g8v-qqvm - CC BY 4.0
Historial de vulnerabilidades: ckeditor/ckeditor
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 4
- Primera → última
- 11.2021 08.2024
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 1
- Media 3
Divulgaciones por año
- 2021: 1
- 2022: 1
- 2023: 0
- 2024: 2
- 2025: 0
- 2026: 0
-
CKEditor4 Cross-site Scripting vulnerability caused by incorrect CDATA detection esta entrada
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