CVE-2026-5422: Path Traversal in jupyter/jupyter
jupyter · jupyter/jupyter
Affected: jupyter/jupyter · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 92% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- jupyter · jupyter/jupyterup to and including latest
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-5422 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.