CVE-2026-42266

Published: Mag 13, 2026 Last Modified: Mag 13, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.

88

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability Other
Potential Impacts:
Execute Unauthorized Code Or Commands Alter Execution Logic Read Application Data Modify Application Data
Applicable Platforms
Languages: Not Language-Specific, PHP
View CWE Details
602

Client-Side Enforcement of Server-Side Security

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Availability
Potential Impacts:
Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Gain Privileges Or Assume Identity
Applicable Platforms
Technologies: ICS/OT, Mobile
Likelihood of Exploit: Medium
View CWE Details
https://github.com/jupyterlab/jupyterlab/security/advisorie…
https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-37w4-hwhx-4rc4