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CVE-2026-95842

Moquette vulnerability

7.5 HIGHPublic exploitEPSS 0.43%
  1. Published23 Sept 2026

Description

Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, SessionEventLoop.run catches only InterruptedException, and SessionEventLoopGroup does not restart a terminated loop. An MQTT command that raises an uncaught exception can terminate an event loop shared by multiple client sessions, preventing every co-located client from processing PUBLISH, SUBSCRIBE, PUBACK, and other commands. An attacker can select client IDs that map across the available loops to disrupt session processing for the entire broker. This issue is fixed in version 0.18.1.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Moquette< 0.18.1

Remediation

Fixed in
Moquette≥ 0.18.1

References

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Frequently asked

Is CVE-2026-95842 being actively exploited?

CVE-2026-95842 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.43%.

How severe is CVE-2026-95842?

CVE-2026-95842 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.43% probability of exploitation.

Which products are affected by CVE-2026-95842?

Affected products include Moquette.

How do I fix CVE-2026-95842?

Upgrade affected software to a fixed version, for example Moquette 0.18.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-95842 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.