TinyMCE Cross-Site Scripting (XSS) vulnerability using noneditable_regexp option
Impact
A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content extraction code. When using the noneditable_regexp option, specially crafted HTML attributes containing malicious code were able to be executed when content was extracted from the editor.
Patches
This vulnerability has been patched in TinyMCE 7.2.0, TinyMCE 6.8.4 and TinyMCE 5.11.0 LTS by ensuring that, when using the noneditable_regexp option, any content within an attribute is properly verified to match the configured regular expression before being added.
Fix
To avoid this vulnerability:
- Upgrade to TinyMCE 7.2.0 or higher.
- Upgrade to TinyMCE 6.8.4 or higher for TinyMCE 6.x.
- Upgrade to TinyMCE 5.11.0 LTS or higher for TinyMCE 5.x (only available as part of commercial long-term support contract).
References
For more information
If you have any questions or comments about this advisory:
- Email us at infosec@tiny.cloud
- Open an issue in the TinyMCE repo
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | tinymce/tinymce | < 5.11.0, >= 6.0.0, < 6.8.4, >= 7.0.0, < 7.2.0 | 5.11.0, 6.8.4, 7.2.0 |
| Paquete de npm | tinymce | < 5.11.0, >= 6.0.0, < 6.8.4, >= 7.0.0, < 7.2.0 | 5.11.0, 6.8.4, 7.2.0 |
| .NET (NuGet) | TinyMCE | < 5.11.0, >= 6.0.0, < 6.8.4, >= 7.0.0, < 7.2.0 | 5.11.0, 6.8.4, 7.2.0 |
| Python (PyPI) | django-tinymce | < 4.1.0 | 4.1.0 |
Referencias
- https://github.com/tinymce/tinymce/security/advisories/GHSA-9hcv-j9pv-qmph
- https://nvd.nist.gov/vuln/detail/CVE-2024-38356
- https://github.com/tinymce/tinymce/commit/5acb741665a98e83d62b91713c800abbff43b00d
- https://github.com/tinymce/tinymce/commit/a9fb858509f86dacfa8b01cfd34653b408983ac0
- https://github.com/tinymce/tinymce
- https://owasp.org/www-community/attacks/xss
- https://www.tiny.cloud/docs/tinymce/6/6.8.4-release-notes/#overview
- https://www.tiny.cloud/docs/tinymce/7/7.2-release-notes/#overview
- https://www.tiny.cloud/docs/tinymce/latest/7.2-release-notes/#overview
- https://pypi.org/project/django-tinymce
- https://github.com/advisories/GHSA-9hcv-j9pv-qmph
- 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, .NET (NuGet), Python (PyPI)
- Paquete
tinymce/tinymce, tinymce, TinyMCE- Publicada
- 19.06.2024
- Actualizado
- 11.10.2026 13:18
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-9hcv-j9pv-qmph - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-1301 - PyPA Advisory Database; CC BY 4.0
Historial de vulnerabilidades: TinyMCE
Todas las vulnerabilidades publicadas de este paquete (.NET (NuGet)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 15
- Primera → última
- 01.2021 06.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 4
- Media 11
Divulgaciones por año
- 2021: 3
- 2022: 1
- 2023: 3
- 2024: 4
- 2025: 0
- 2026: 4
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TinyMCE Cross-Site Scripting (XSS) vulnerability using noneditable_regexp option esta entrada
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