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CVE-2026-95846

Moquette broken access control

7.5 HIGHPublic exploitEPSS 0.27%
  1. Published23 Sept 2026

Description

Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client's Last-Will message without applying the canWrite authorization and reserved-topic checks used for a normal PUBLISH. A client can configure a Will for a topic that the client is not permitted to write and cause the broker to publish the unauthorized message when the client disconnects unexpectedly. This issue allows unauthorized message injection into restricted topics. This issue is fixed in version 0.18.1.

CVSS 3.1 breakdown

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

Affected products

Moquette< 0.18.1

Remediation

Fixed in
Moquette≥ 0.18.1

References

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Frequently asked

Is CVE-2026-95846 being actively exploited?

CVE-2026-95846 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.27%.

How severe is CVE-2026-95846?

CVE-2026-95846 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.27% probability of exploitation.

Which products are affected by CVE-2026-95846?

Affected products include Moquette.

How do I fix CVE-2026-95846?

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-2026-95846 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.