> CVE-2026-42266 [HIGH]

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PUBLISHED
2026-05-13 16:16
MODIFIED
2026-05-13 16:32
CVSS_SCORE V3
8.8
EPSS (Prob. Exploit)
0.85%
Top 42.1%
DATA SOURCES:
NVD 🔗 2026-05-13 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-29

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EXPLOITABILITY
2.8
IMPACT
5.9

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-88 CWE-602

> CWE DETAILED DESCRIPTIONS

CWE-88: Improper Neutralization of Argument Delimiters in a Command - The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. | CWE-602: Client-Side Enforcement of Server-Side Security - The product includes a server that relies on the client to implement a protection mechanism that is intended to protect the server.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: Migration Toolkit for Applications
A new version of Migration Toolkit for Applications (MTA) is now available.
Red Hat Security Advisory: RHOAI 3.4.4 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.

> GITHUB SECURITY ADVISORY

GHSA-37w4-hwhx-4rc4 HIGH

JupyterLab has an Extension Manager API/GUI Policy Discrepancy, allowing 3rd party (malicious) extensions install via POST request

AFFECTED PACKAGES:
PIP / jupyterlab
>= 4.0.0, <= 4.5.6
Fixed in: 4.5.7

> HISTORIQUE DES MODIFICATIONS

Première apparition
13/05/2026 16:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') - The product constructs a string for a command to be executed by a separate component in another control sph...
Nouvelle valeur:
CWE-88: Improper Neutralization of Argument Delimiters in a Command - The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not pr...
📊 ENRICHISSEMENT 01/06/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') - The product constructs a string for a command to be executed by a separate component in another control sph...
Total des modifications: 2 Dernière mise à jour: 6 days ago

> REFERENCES

https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-37w4-hwhx-4rc4
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