CVE-2026-35397
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-22
Limitación incorrecta de nombre de ruta a un directorio restringido (Path Traversal)
Fecha de publicación:
05/05/2026
Última modificación:
05/05/2026
Descripción
*** Pendiente de traducción *** Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, a path traversal vulnerability in the REST API allows an authenticated user to escape the configured root_dir and access sibling directories whose names begin with the same prefix as the root_dir. For example, with a root_dir named "test", the API permits access to a sibling directory named "testtest" through a crafted request to the /api/contents endpoint using encoded path components. An attacker can read, write, and delete files in affected sibling directories. Multi-tenant deployments using predictable naming schemes are particularly at risk, as a user with a directory named "user1" could access directories for user10 through user19 and beyond. A user who can choose a single-character folder name could gain access to a significant number of sibling directories. <br />
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Version 2.18.0 contains a fix. As a workaround, ensure folder names do not share a common prefix with any sibling directory.
Impacto
Puntuación base 4.0
7.60
Gravedad 4.0
ALTA