CVE-2025-52904
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. In versions of the web application on the 2.x branch, all users have a scope assigned, and they only have access to the files within that scope. The Command Execution feature of Filebrowser allows the execution of shell commands which are not restricted to the scope, potentially giving an attacker read and write access to all files managed by the server.
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Until this issue is fixed, the maintainers recommend to completely disable `Execute commands` for all accounts. Since the command execution is an inherently dangerous feature that is not used by all deployments, it should be possible to completely disable it in the application's configuration. This feature has been disabled by default for all installations from v2.33.8 onwards, including for existent installations. To exploit this vulnerability, the instance administrator must turn on a feature and ignore all the warnings about known vulnerabilities.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Puntuación base: 8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.11%
- Percentil entre todas las CVEs puntuadas: 65
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement75 % - Impacto principal
T1059Command and Scripting Interpreterexecution85 % - Impacto secundario
T1005Data from Local Systemcollection80 % - Impacto secundario
T1565.001Stored Data Manipulationimpact75 %
Requiere PR:H y acceso remoto a un servicio web (T1210). Ejecuta comandos shell sin restricción de scope (T1059), permitiendo lectura de archivos (T1005) y modificación fuera del directorio permitido (T1565.001).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-77
Referencias
- https://github.com/GoogleContainerTools/distroless
- https://github.com/filebrowser/filebrowser/issues/5199
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-hc8f-m8g5-8362
- https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250326-01_Filebrowser_Command_Execution_Not_Limited_To_Scope
- https://pkg.go.dev/vuln/GO-2025-3793
- https://sloonz.github.io/posts/sandboxing-1
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-hc8f-m8g5-8362
JSON original (NVD)
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"value": "File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. In versions of the web application on the 2.x branch, all users have a scope assigned, and they only have access to the files within that scope. The Command Execution feature of Filebrowser allows the execution of shell commands which are not restricted to the scope, potentially giving an attacker read and write access to all files managed by the server. Until this issue is fixed, the maintainers recommend to completely disable `Execute commands` for all accounts. Since the command execution is an inherently dangerous feature that is not used by all deployments, it should be possible to completely disable it in the application's configuration. This feature has been disabled by default for all installations from v2.33.8 onwards, including for existent installations. To exploit this vulnerability, the instance administrator must turn on a feature and ignore all the warnings about known vulnerabilities."
},
{
"lang": "es",
"value": "File Browser proporciona una interfaz de gestión de archivos dentro de un directorio específico y permite cargar, eliminar, previsualizar, renombrar y editar archivos. En la versión 2.32.0 de la aplicación web, todos los usuarios tienen un ámbito asignado y solo tienen acceso a los archivos dentro de él. La función de Ejecución de Comandos del Explorador de Archivos permite la ejecución de comandos de shell sin restricciones de ámbito, lo que podría otorgar a un atacante acceso de lectura y escritura a todos los archivos administrados por el servidor. Hasta que se solucione este problema, los responsables recomiendan deshabilitar completamente la función \"Ejecutar comandos\" en todas las cuentas. Dado que la ejecución de comandos es una función inherentemente peligrosa que no se utiliza en todas las implementaciones, debería ser posible deshabilitarla por completo en la configuración de la aplicación. Como medida de defensa, las organizaciones que no requieran la ejecución de comandos deberían operar el Explorador de Archivos desde una imagen de contenedor sin distribución. Se ha publicado una versión de parche para deshabilitar la función en todas las instalaciones existentes y habilitarla. Se ha añadido una advertencia a la documentación que se muestra en la consola si la función está habilitada. Debido a que el proyecto se encuentra en modo de mantenimiento, el error no se ha corregido. La corrección se encuentra en la solicitud de incorporación de cambios 5199."
}
],
"lastModified": "2026-06-17T09:37:15.007",
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