CVE-2026-5422— Path Traversal in jupyter/jupyter
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| jupyter | jupyter/jupyter | unspecified≤ latest | affected |
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I. Basic Information for CVE-2026-5422
Vulnerability Information
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Vulnerability Title
Path Traversal in jupyter/jupyter
Source: NVD (National Vulnerability Database)
Vulnerability Description
A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boundary check in the _get_os_path() function within jupyter_server/services/contents/fileio.py. The check uses startswith(root) without appending a trailing path separator, allowing sibling directories with names starting with the same prefix as root_dir to bypass the check. Additionally, the to_os_path() function in utils.py does not strip ".." from path parts, enabling traversal sequences to bypass the vulnerable check. This vulnerability can lead to unauthorized read/write access to files in sibling directories, potentially exposing sensitive data in shared hosting environments.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
相对路径遍历
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| jupyter | jupyter/jupyter | unspecified ~ latest | - |
II. Public POCs for CVE-2026-5422
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-5422 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-5422
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