DEBIAN-CVE-2026-35397
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-35397
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35397.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-35397
- Upstream
- Published
- 2026-05-05T20:16:38Z
- Modified
- 2026-09-14T17:03:09Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:12 / jupyter-server
Package
- Name
- jupyter-server
- Purl
- pkg:deb/debian/jupyter-server?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / jupyter-server
Package
- Name
- jupyter-server
- Purl
- pkg:deb/debian/jupyter-server?arch=source&distro=trixie
Debian:14 / jupyter-server
Package
- Name
- jupyter-server
- Purl
- pkg:deb/debian/jupyter-server?arch=source&distro=forky