CVE-2026-95848
9.1 CRITICALpublic exploit availablePublished 2026-09-23 · Updated 2026-09-28
AI risk analysis
- Summary
- The flaw allows the MQTT broker to start without configured authentication or authorization, potentially exposing the system to unauthorized access.
- Exploitability
- Exploitation is relatively easy if the class name is misspelled or if there are missing dependencies, as these conditions can disable critical security features.
- Blast radius
- If exploited, this could lead to unauthorized access to the MQTT broker, potentially allowing malicious actors to publish or subscribe to topics without proper authorization.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Upgrade to moquette version 0.18.1 or later.
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD 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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-636
Vendors
moquette
Products
moquette
Public exploit & PoC references
- https://github.com/moquette-io/moquette/commit/14a2f4fd280c8f6a791600c306cbccecb7c67007[Patch]
- https://github.com/moquette-io/moquette/pull/967[Patch]
- https://github.com/moquette-io/moquette/releases/tag/v0.18.1[Release Notes]
- https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq[Exploit, Mitigation, Vendor Advisory]
- https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq[Exploit, Mitigation, Vendor Advisory]
All 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
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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