AUGUST 24, 2026
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Case File

CVE-2026-54528

HIGH · CVSS 7.1 EPSS 0.35% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-08 · Last synced 2026-08-07

CyberRota Analysis

AI-Generated

JupyterLab Git versions prior to 0.54.0 are vulnerable to a path casing issue that allows authenticated users on case-insensitive filesystems to bypass access controls and read excluded directories. This vulnerability poses a significant risk of unauthorized data exposure, particularly in environments where sensitive information is stored. Organizations using JupyterLab Git should prioritize upgrading to version 0.54.0 or later to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-54528
Severity
HIGH
CVSS
7.1
EPSS
0.35%

Original NVD 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.

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