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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-54528

29
FAUCET Score

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.

First published: Jul 8, 2026Last modified: Jul 8, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 0.54.0CPE matchmatch criteria
cpe:2.3:a:jupyter:jupyterlab-git:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 15th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: jupyterlab-gitFixed in: 0.54.0

Vendor Advisories (1)

pipGHSA-436q-jwfr-rm2hhigh

jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories

Jun 19, 2026

References

github.com / jupyterlab/jupyterlab-git/commit/460035275b5963dc96e364e60ba6a73717fbd033
Patch
github.com / jupyterlab/jupyterlab-git/releases/tag/v0.54.0
Release Notes
github.com / jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2h
ExploitVendor Advisory