CVE-2026-54528
Published:July 08, 2026
Updated:July 21, 2026
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
jupyterlab-git (CONDA):
Affected version(s) >=0.4.4 <0.54.0Fix Suggestion:
Update to version 0.54.0https://github.com/jupyterlab/jupyterlab-git.git (GITHUB):
Affected version(s) >=v0.3.0 <v0.54.0Fix Suggestion:
Update to version v0.54.0jupyterlab-git (PYTHON):
Affected version(s) >=0.1.1 <0.54.0Fix Suggestion:
Update to version 0.54.0Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Handling of Case Sensitivity
EPSS
Base Score:
0.30