CVE-2026-54528
jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
JupyterLab Git is a Git extension for JupyterLab. Prior to 0.54.0, jupyterlab-git uses fnmatch.fnmatchcase() in GitHandler.prepare() in jupyterlab_git/handlers.py to enforce excluded_paths, allowing an authenticated user on a case-insensitive filesystem to vary URL path casing and read excluded directories. This issue is fixed in version 0.54.0.
| CWE | CWE-178 |
| Vendor | jupyterlab |
| Product | jupyterlab-git |
| Published | Jul 8, 2026 |
| Last Updated | Jul 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
jupyterlab / jupyterlab-git
< 0.54.0