CVE-2026-54528
Last modified
CVE-2026-54528 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jupyter | Jupyterlab-Git | < 0.54.0 |
References
- https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2hExploit, Vendor Advisory
- https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2hExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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