> CVE-2026-95848 [CRITICAL]

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PUBLISHED
2026-09-23 17:17
MODIFIED
2026-09-23 17:17
CVSS_SCORE V3
9.3
EPSS (Prob. Exploit)
0.42%
Top 64.4%
DATA SOURCES:
NVD đź”— 2026-09-23 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-23 OSV đź”— 2026-09-30

> DESCRIPTION

Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when a configured authenticator or authorizator class cannot be loaded, Server.initializeAuthenticator and Server.initializeAuthorizatorPolicy treat the failure as though no custom class was configured and fall back to AcceptAllAuthenticator or PermitAllAuthorizatorPolicy. A misspelled class name, missing dependency, constructor failure, or classpath problem can therefore start the broker with authentication or authorization disabled even though the operator configured those controls. This issue is fixed in version 0.18.1.

> AFFECTED_PRODUCTS

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

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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
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
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-636

> CWE DETAILED DESCRIPTIONS

CWE-636: Not Failing Securely ('Failing Open') - When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Moquette fails open when configured authentication or authorization classes cannot load

AFFECTED PACKAGES:
Unknown / Unknown
15 versions affected
ALIASES:
CVE-2026-85724, CVE-2026-95842, CVE-2026-95843, CVE-2026-95844, CVE-2026-95845, CVE-2026-95846, CVE-2026-95847, GHSA-5f42-97gr-vfhq

> HISTORIQUE DES MODIFICATIONS

Première apparition
23/09/2026 17:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-636: Not Failing Securely ('Failing Open') - When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that a...
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://github.com/moquette-io/moquette/commit/14a2f4fd280c8f6a791600c306cbccecb...
https://github.com/moquette-io/moquette/pull/967
https://github.com/moquette-io/moquette/releases/tag/v0.18.1
https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq
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