CVE-2026-54528: high-severity vulnerability in jupyterlab-git
jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Affected products
jupyterlab · jupyterlab-gitRelated CVEs — jupyterlab-git
In the same product, most dangerous first.