high7.1
CVE-2026-54528
jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | jupyterlab-git | <= 0.53.0 | 0.54.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jupyter | Jupyterlab-Git | before 0.54.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-436q-jwfr-rm2h
- https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2h
- https://github.com/jupyterlab/jupyterlab-git/commit/460035275b5963dc96e364e60ba6a73717fbd033
- https://github.com/jupyterlab/jupyterlab-git/releases/tag/v0.54.0