> CVE-2026-4370 [CRITICAL]

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PUBLISHED
2026-04-01 09:16
MODIFIED
2026-04-01 09:16
CVSS_SCORE V3
10.0
EPSS (Prob. Exploit)
0.39%
Top 66.9%
DATA SOURCES:
NVD 🔗 2026-04-01 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-01

> DESCRIPTION

A vulnerability was identified in Juju from version 3.2.0 until 3.6.19 and from version 4.0 until 4.0.4, where the internal Dqlite database cluster fails to perform proper TLS client and server authentication. Specifically, the Juju controller's database endpoint does not validate client certificates when a new node attempts to join the cluster. An unauthenticated attacker with network reachability to the Juju controller's Dqlite port can exploit this flaw to join the database cluster. Once joined, the attacker gains full read and write access to the underlying database, allowing for total data compromise.

> 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:N/UI:N/S:C/C:H/I:H/A:H
EXPLOITABILITY
3.9
IMPACT
6.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà 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-295 CWE-306

> CWE DETAILED DESCRIPTIONS

CWE-295: Improper Certificate Validation - The product does not validate, or incorrectly validates, a certificate. | CWE-306: Missing Authentication for Critical Functionality - The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

> GITHUB SECURITY ADVISORY

GHSA-gvrj-cjch-728p CRITICAL

Juju has Improper TLS Client/Server authentication and certificate verification on Database Cluster

AFFECTED PACKAGES:
GO / github.com/juju/juju
<= 0.0.0-20260401092550-1c1ac1922b57

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Improper TLS Client/Server authentication and certificate verification on Database Cluster

AFFECTED PACKAGES:
Unknown / Unknown
4 versions affected
ALIASES:
GHSA-gvrj-cjch-728p, GO-2026-5405

> HISTORIQUE DES MODIFICATIONS

Première apparition
01/04/2026 09:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-295: Improper Certificate Validation - The product does not validate, or incorrectly validates, a certificate. | CWE-306: Missing Authentication for Critical Function - The product does not perfor...
Nouvelle valeur:
CWE-295: Improper Certificate Validation - The product does not validate, or incorrectly validates, a certificate. | CWE-306: Missing Authentication for Critical Functionality - The product does not p...
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-295: Improper Certificate Validation - The product does not validate, or incorrectly validates, a certificate. | CWE-306: Missing Authentication for Critical Function - The product does not perfor...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://github.com/juju/juju/security/advisories/GHSA-gvrj-cjch-728p
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