High severity7.1NVD Advisory· Published Jul 8, 2026· Updated Jul 15, 2026
CVE-2026-54528
CVE-2026-54528
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
jupyterlab-gitPyPI | < 0.54.0 | 0.54.0 |
Affected products
2<0.54.0+ 1 more
- (no CPE)range: <0.54.0
- cpe:2.3:a:jupyter:jupyterlab-git:*:*:*:*:*:*:*:*range: <0.54.0
Patches
Vulnerability mechanics
References
4- github.com/jupyterlab/jupyterlab-git/commit/460035275b5963dc96e364e60ba6a73717fbd033nvdPatch
- github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2hnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-436q-jwfr-rm2hghsaADVISORY
- github.com/jupyterlab/jupyterlab-git/releases/tag/v0.54.0nvdRelease Notes
News mentions
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