October CMS safe mode bypass using Twig sandbox escape
Impact
An authenticated backend user with the editor.cms_pages, editor.cms_layouts, or editor.cms_partials permissions who would normally not be permitted to provide PHP code to be executed by the CMS due to cms.safe_mode being enabled can write specific Twig code to escape the Twig sandbox and execute arbitrary PHP.
This is not a problem for anyone who trusts their users with those permissions to usually write and manage PHP within the CMS by not having cms.safe_mode enabled. Still, it would be a problem for anyone relying on cms.safe_mode to ensure that users with those permissions in production do not have access to write and execute arbitrary PHP.
Patches
This issue has been patched in v3.4.15.
Workarounds
As a workaround, remove the specified permissions from untrusted users.
References
Credits to:
For more information
If you have any questions or comments about this advisory:
- Email us at hello@octobercms.com
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | october/system | >= 3.0.0, < 3.4.15 | 3.4.15 |
Referencias
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H- Debilidad (CWE)
CWE-94- Plataforma
- Composer
- Paquete
october/system- Publicada
- 29.11.2023
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-p8q3-h652-65vx - CC BY 4.0
Historial de vulnerabilidades: october/system
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
- 25
- Primera → última
- 06.2020 09.2026
- Sin corrección
- 0
- Explotada en ataques
- 1
Distribución por gravedad
- Crítica 1
- Alta 8
- Media 9
- Baja 7
Divulgaciones por año
- 2020: 1
- 2021: 3
- 2022: 6
- 2023: 3
- 2024: 2
- 2025: 1
- 2026: 9
-
October CMS safe mode bypass using Twig sandbox escape esta entrada
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