CVE WatchSep 28, 2026

CVE-2026-95848

Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when a configured authenticator or authorizator class cannot be loaded, Server.

CVSS

9.1

Critical

EPSS

0.4%

p35

KEV

—

Exploit Today

0-100

Published: Sep 23, 2026 · Last modified: Sep 28, 2026 · CWE-636

EPSS · 30d

0.4%EPSS · 30 days0.5%

2026-09-242026-10-19

Technical 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.

Official references

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