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CVE-2026-95848Moquette fails open when configured authentication or authorization classes cannot load
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.
9.3 CRITICALEPSS 0.42%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.3 | CRITICAL | 4.0GitHub_M (CNA) | 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 |
| 9.1 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Details
- CVE ID
- CVE-2026-95848
- Status
- Analyzed
- Assigner (CNA)
- GitHub_M
- Published
- Sep 23, 2026
- Last modified
- 2026-09-28 15:23 UTC
- Weaknesses
- CWE-636 · Not Failing Securely ('Failing Open')
Affected Products
As published by the CNA in the CVE record.
moquette-iomoquette1 version range
- < 0.18.1
References
- github.com https://github.com/moquette-io/moquette/commit/14a2f4fd280c8f6a791600c306cbccecb7c67007
- github.com https://github.com/moquette-io/moquette/pull/967
- github.com https://github.com/moquette-io/moquette/releases/tag/v0.18.1
- github.com https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq