CVE-2026-95848

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.

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Weakness Type (CWE)

CWE-636 CWE-636

References

Other References

https://github.com/moquette-io/moquette/commit/14a2f4fd280c8f6a791600c306cbccecb7c67007 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 https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq

Frequently Asked Questions

What is 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.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.

How do I check if I'm vulnerable to CVE-2026-95848? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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