8.8
CVE-2026-35397
- EPSS 0.58%
- Veröffentlicht 05.05.2026 20:16:38
- Zuletzt bearbeitet 30.06.2026 03:19:02
- Quelle security-advisories@github.com
- CVE-Watchlists
- Unerledigt
jupyter-server path traversal allows access to sibling directories sharing root_dir name prefix
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. Version 2.18.0 contains a fix. As a workaround, ensure folder names do not share a common prefix with any sibling directory.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Jupyter ≫ Jupyter Server Version < 2.18.0
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Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.58% | 0.435 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 8.8 | 2.8 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| security-advisories@github.com | 7.6 | 0 | 0 |
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
| 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | 7.1 | 1.6 | 5.5 |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
|
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-5789-5fc7-67v3
https://access.redhat.com/security/cve/CVE-2026-35397
https://bugzilla.redhat.com/show_bug.cgi?id=2466858
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35397.json