CVE-2026-11816
Full vulnerability record from the local CVENow database.
Description
Keras versions prior to 3.14.0 are vulnerable to a path traversal issue in the archive extraction utilities located in `keras/src/utils/file_utils.py`. The functions `filter_safe_tarinfos()` and `filter_safe_zipinfos()` validate archive member paths against the process current working directory (CWD) instead of the actual extraction destination. When the process runs with CWD set to `/`, which is common in Docker containers, CI/CD runners, and Jupyter environments, the validation boundary becomes the filesystem root, allowing traversal paths to bypass the security check. Additionally, the zip filter contains a bug that causes an `AttributeError` when a blocked entry is encountered, leading to incomplete extraction. Furthermore, Python 3.11 installations lack the `filter="data"` safety net, leaving them entirely reliant on the flawed CWD-based filter. Exploitation of this vulnerability can result in arbitrary file writes outside the intended extraction directory, enabling attackers to overwrite configuration files, inject malicious code, or corrupt machine learning datasets and pipelines.
Severity
HIGH
CVSS score
8.1
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2026-06-11 14:16:26.557000
Last modified
2026-10-26 11:10:00.157000
View original CVE JSON
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"value": "Keras versions prior to 3.14.0 are vulnerable to a path traversal issue in the archive extraction utilities located in `keras/src/utils/file_utils.py`. The functions `filter_safe_tarinfos()` and `filter_safe_zipinfos()` validate archive member paths against the process current working directory (CWD) instead of the actual extraction destination. When the process runs with CWD set to `/`, which is common in Docker containers, CI/CD runners, and Jupyter environments, the validation boundary becomes the filesystem root, allowing traversal paths to bypass the security check. Additionally, the zip filter contains a bug that causes an `AttributeError` when a blocked entry is encountered, leading to incomplete extraction. Furthermore, Python 3.11 installations lack the `filter=\"data\"` safety net, leaving them entirely reliant on the flawed CWD-based filter. Exploitation of this vulnerability can result in arbitrary file writes outside the intended extraction directory, enabling attackers to overwrite configuration files, inject malicious code, or corrupt machine learning datasets and pipelines."
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"value": "Las versiones de Keras anteriores a la 3.14.0 son vulnerables a un problema de salto de ruta en las utilidades de extracción de archivos ubicadas en ’keras/src/utils/file_utils.py’. Las funciones ’filter_safe_tarinfos()’ y ’filter_safe_zipinfos()’ validan las rutas de los miembros del archivo contra el directorio de trabajo actual del proceso (CWD) en lugar del destino de extracción real. Cuando el proceso se ejecuta con CWD establecido en ’/’, lo cual es común en contenedores Docker, ejecutores de CI/CD y entornos Jupyter, el límite de validación se convierte en la raíz del sistema de archivos, permitiendo que las rutas de salto eludan la comprobación de seguridad. Además, el filtro zip contiene un error que causa un ’AttributeError’ cuando se encuentra una entrada bloqueada, lo que lleva a una extracción incompleta. Además, las instalaciones de Python 3.11 carecen de la red de seguridad ’filter=“data”’, dejándolas completamente dependientes del filtro defectuoso basado en CWD. La explotación de esta vulnerabilidad puede resultar en escrituras de archivos arbitrarias fuera del directorio de extracción previsto, permitiendo a los atacantes sobrescribir archivos de configuración, inyectar código malicioso o corromper conjuntos de datos y pipelines de aprendizaje automático."
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