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CVE-2026-102832
Published:October 13, 2026
Updated:October 14, 2026
JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.5.7 until 4.5.11 and 4.6.4, the markdownviewer:trust and notebook:trust command-link handlers use tracker.currentWidget to resolve the current Markdown viewer or notebook when the user answers rather than retaining the document whose command button was clicked. If another document becomes current while the prompt is open and the user chooses Trust, JupyterLab marks the second document trusted while leaving the clicked document untrusted. Later command buttons in the incorrectly trusted document run without a prompt, and trusting a notebook marks all cells trusted, saves unsaved edits, and persists the server signature to disk. Applications that bundle JupyterLab, including affected Notebook and JupyterLite releases, inherit the behavior. This issue is fixed in versions 4.5.11 and 4.6.4.
Affected Packages
notebook (CONDA):
Affected version(s) >=7.6.0 <7.6.3
Fix Suggestion:
Update to version 7.6.3
jupyterlab (CONDA):
Affected version(s) >=4.6.0 <4.6.4
Fix Suggestion:
Update to version 4.6.4
jupyterlab (CONDA):
Affected version(s) >=4.5.7 <4.5.11
Fix Suggestion:
Update to version 4.5.11
jupyterlite-core (CONDA):
Affected version(s) >=0.8.0 <0.8.4
Fix Suggestion:
Update to version 0.8.4
jupyterlab (PYTHON):
Affected version(s) >=4.6.0 <4.6.4
Fix Suggestion:
Update to version 4.6.4
jupyterlab (PYTHON):
Affected version(s) >=4.5.7 <4.5.11
Fix Suggestion:
Update to version 4.5.11
jupyterlite-core (PYTHON):
Affected version(s) >=0.8.0 <0.8.4
Fix Suggestion:
Update to version 0.8.4
notebook (PYTHON):
Affected version(s) >=7.6.0 <7.6.3
Fix Suggestion:
Update to version 7.6.3
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CVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Time-of-check Time-of-use (TOCTOU) Race Condition
Incorrect Authorization