Description
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, H2PersistentQueue derives a session's message-map name as queue_ plus the client ID and its metadata-map name as queue_ plus the client ID plus _meta. A durable session whose client ID ends in _meta can therefore make its message map collide with another client's metadata map. The colliding sessions read and write the same H2 MVStore map with incompatible value types, which can corrupt queue head and tail data and cause message loss, misdelivery, failed queue reloads, or exposure of queued content across sessions. This issue is fixed in version 0.18.1.
Published: 2026-09-23
Score: 8.8 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Wed, 23 Sep 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Moquette-io
Moquette-io moquette
Vendors & Products Moquette-io
Moquette-io moquette

Wed, 23 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 23 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, H2PersistentQueue derives a session's message-map name as queue_ plus the client ID and its metadata-map name as queue_ plus the client ID plus _meta. A durable session whose client ID ends in _meta can therefore make its message map collide with another client's metadata map. The colliding sessions read and write the same H2 MVStore map with incompatible value types, which can corrupt queue head and tail data and cause message loss, misdelivery, failed queue reloads, or exposure of queued content across sessions. This issue is fixed in version 0.18.1.
Title Moquette client IDs can cause cross-session H2 durable-queue corruption
Weaknesses CWE-99
References
Metrics cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N'}


Subscriptions

Moquette-io Moquette
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-23T16:50:25.152Z

Reserved: 2026-09-22T16:39:45.794Z

Link: CVE-2026-95847

cve-icon Vulnrichment

Updated: 2026-09-23T16:50:18.677Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-23T17:17:21.780

Modified: 2026-09-23T18:12:04.247

Link: CVE-2026-95847

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T19:00:07Z

Weaknesses
  • CWE-99

    Improper Control of Resource Identifiers ('Resource Injection')