CVE-2026-5422
- Source
- https://cve.org/CVERecord?id=CVE-2026-5422
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5422.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-5422
- Aliases
- Downstream
- Related
- Published
- 2026-06-02T09:11:15Z
- Modified
- 2026-10-28T02:30:27Z
- Severity
-
- 6.8 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- Path Traversal in jupyter/jupyter
- Details
-
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.
- Database specific
{ "cna_assigner": "@huntr_ai", "cwe_ids": [ "CWE-23" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5422.json" }- References
Affected packages
Git / github.com/jupyter-server/jupyter_server
Affected ranges
- Type
- GIT
- Repo
- https://github.com/jupyter-server/jupyter_server
- Events
-
IntroducedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:jupyter:jupyter_server:2.17.0:*:*:*:*:*:*:*", "range": [ { "introduced": "2.17.0" }, { "last_affected": "2.17.0" } ], "source": "CPE_STRING" } ] }