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CVE-2026-95847

7.5, high

Moquette is a lightweight Java MQTT broker

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
0.3% higher than 25.9% of scored CVEs
Exploitation
Exploit code published
Published
23 Sept 202624 days ago

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.

Details

Vendor
Moquette-io
Product
moquette
Weakness
CWE-99 (opens in a new tab)
Status
Analyzed
Updated
28 Sept 2026
Assigner
security-advisories@github.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References 4

Exploit code 1

Patches and fixes 2

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Moquette-io CVEs

Every Moquette-io CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-95848 Moquette is a lightweight Java MQTT broker EPSS 0.4% 9.1, critical
  • CVE-2026-95842 Moquette is a lightweight Java MQTT broker EPSS 0.4% 7.5, high
  • CVE-2026-95843 Moquette-io moquette Improper Input Validation Vulnerability EPSS 0.4% 7.5, high
  • CVE-2026-95844 Moquette is a lightweight Java MQTT broker EPSS 0.4% 7.5, high
  • CVE-2026-95845 Moquette-io moquette Allocation of Resources Without Limits or Throttling Vulnerability EPSS 0.4% 7.5, high
  • CVE-2026-95846 Moquette-io moquette Missing Authorization Vulnerability EPSS 0.3% 7.5, high

Beyond this page

Is CVE-2026-95847 in your network?

This page tells you how dangerous CVE-2026-95847 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.