Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Moquette | Moquette | < 0.18.1 |
Related Weaknesses (CWE)
References
- https://github.com/moquette-io/moquette/commit/14a2f4fd280c8f6a791600c306cbccecbPatch
- https://github.com/moquette-io/moquette/pull/967Patch
- https://github.com/moquette-io/moquette/releases/tag/v0.18.1Release Notes
- https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhqExploitMitigationVendor Advisory
- https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhqExploitMitigationVendor Advisory
FAQ
What is CVE-2026-95848?
CVE-2026-95848 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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.initializeAuthorizatorPol...
How severe is CVE-2026-95848?
CVE-2026-95848 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-95848?
Check the references section above for vendor advisories and patch information. Affected products include: Moquette Moquette.